Is There Any Way to Reverse Aging Effects?

I am twenty years old and I already notice that I have big bags under my eyes. My skin certainly isn't healthy and I look around 25 years old. I would imagine that this can be explained by the fact I have smoked a pack and a half a day since I was fourteen. I also live a sedentary lifestyle, eat an unhealthy diet, and was formerly a drug addict. Is there any way for me to look my age and try and halt this aging process?

Suggestion:

stop soking
eat healthily
get enough sleep
get regular exercise
cross fingers