My biggest problem is power and endurance, I'm not what I used to be 20 years ago, back then I can do a lot of freestyle tricks and I regularly do ramps, but age affects everyone, and years of corporate work, cigarette smokng and non riding brought my endurance down. I'm trying to build up my power and endurance again by lessening my smoking, drinking a lot of vitamins and by riding.
This is really good and I hope everything will work out better for you. Smoking can really affect the energy we have as riders and it's a good thing that you are working towards reducing the intake at the moment for that is the only way you can regain your endurance level as well.