In the 90's, there was this college student. He was a good student, and got into a top tier college. He also happened to be motivated. When he wanted something, nothing stood in his way. He wanted a degree in a certain difficult subject. Unfortunately, the college department for that particular thing was terrible. Classes didn't even run for the upper level, and the teachers were ancient and burnt out or young druggies. He didn't turn around and find an easier degree. He went before the board and singlehandedly convinced them to run classes for him. He overcame the rubbish teachers and got that degree. Moral of the story? If you want something, get up and
go get it.
Your brain is a tool. It's a complex, thinking, feeling tool, but it's still a tool. Like all tools, they rust if left in the rain, and then when you try to use them, you give up, because they don't work; you say it's too hard, and you'd be right. Brains rust from inactivity. We are not wired for laziness, we are wired to learn. Even your phone addiction proves this. Humans are
so keen on avoiding boredom that we invent tasks, such as reading our entire Twitter feed, and we do it. It also happens to be another form of rust, but that's a delineation from the point. My point is that you already have the ability to stick to a task. Change it to an active task that will grind the rust off instead of adding to it. Your brain is currently addicted—yes, addicted—to the slow drip of dopamine that social media gives you. Getting out of that and finding the same joy in the struggle to achieve won't be easy. In fact, I'd argue it will be harder than the actual thing itself you set out to do, even if the 'thing' is rocket science.
I forget where this quote is from, but I liked it. "If information were the gatekeeper to success, we'd all be billionaires with perfect abs." Obviously it's reductionistic and not the entire truth, but it rings true for many cases.
I have never struggled to find a goal I wanted, but I did have to learn that I was responsible for getting it, just like everybody else. I am naturally an obsessive person. Take horses, for instance. I must have been five or so when that fire was lit. I read as many books on them as I could find; I collected models from yard sales; I begged my parents for a horse at least monthly. That fire never went out, it only flamed higher. In high school, I read studies on their biomechanical functions. I helped out at a local farm, got riding lessons, and enjoyed every second. I memorized entire books on them so well that I could nearly quote the breed descriptions word-for-word. I still love horses to this day. I'd have one if common sense didn't tell me I still need to wait for better land. As I grew, I added passions, not subtracted them. Music. Art. Engineering. Most recently, chickens. Even in adult life, there's no reason at all why you can't find something; I've found plenty. All of those things required incredible amounts of study and practice and money to become proficient in them. I don't recommend being
quite as much of a nutter as me—it did take its toll, and I'm pretty sure a shrink could've given me a list of psychiatric diagnoses as long as my arm at some point. I'm no stranger to that side of the world, so I truly do know what you mean about thinking your mental health might play a part in your trouble. Get help for it. If you persist in saying it's not a big deal, it'll fester and get worse. Trust me. But find your fire, and then fan it.
I think you've said that you already went to college. What did you get a degree in? Can you use it to find a real job? Walking dogs doesn't count unless you're making at least what minimum wage for a
full time job would earn you. Even if your degree isn't going to help, college isn't something you need to be successful. You can get plenty by pulling on your own bootstraps. Maybe more, even, since you won't have student debt to pay off. Honestly, it's criminal what they charge these days. Do you mind working in management? If not, maybe take a few classes at your community college, and find a shelter or training centre or something nearby. I don't know exactly what places are around, that's the kind of research you should do. Don't worry about starting your own or getting an important position. Just find somewhere. Then work your way up over the years. It's harder getting a job that involves puppies, because everyone wants that job. But it's possible, as long as you have realism about it. "You can accomplish anything you set your mind to" isn't exactly true, but at the same time, determination will get you a long way and certainly a lot further than you are now. I don't know what the employment scene in your area looks like so it's hard to help there. Find something, though. Trade schools are a good option as well if you want to get large salaries. There's a lack of people that are willing to do the work that comes along with it. I didn't go for that option, but I thought about it.
For now—right now, not later, or some years in the future—work on getting out of that dopamine hold. I know you say you need your phone, so, keep it, then. What you need to eliminate is scrolling without a purpose. That does nothing at all. Turn decisions into binaries. Yes/no, black/white. Do I sit here or do I get up and finish a task? Two choices. You're forced to choose one. No more indefinite "I'll do something later"s. Your future is what you make of it, and you won't have your parents' house to live in forever.
Not everybody is going to agree with all the points I have made here, but I have proven them true to myself in my situation with my background and my goals. Your mileage may vary.