I'm 38 - no wrinkles, yet. Wrinkles are mostly a combination of genetics and environment (most things are). You cannot really do anything about your genetics, but you can do lots with your environment.
Here's the secret - MOISTURIZE with a good lotion in the night and day, use a rose toner or similar to clean your face at night (don't use soap more than once a day), drink plenty of water, wear sunscreen and hats. Wear very little makeup (all those chemicals do their damage, too). Depending on your skin type, add a clay mask or scrub to your regime each week - I do mine in the tub (moist heat is great for the skin).
You'll look lovely, with or without wrinkles. Botox is nasty stuff, do not get involved in that slow descent into Vanity Hell.