Hydration is KING. Drink as close to 64floz of water a day as you can. Next is being active, doing something physical that makes you sweat for at least 30 mins a day is ideal (no, jacking off doesn't count). Finally, tailor your diet and lifestyle. Stop smoking and drinking habitually, eat plenty of veg and fruit, and make sure you consume enough zinc through diet. Not supplements.
Whatever you do, don't fall into supplement traps. They are expensive and provide negligible returns for the probable side-effects you'll have.
I seriously cannot stress enough the hydration part.
What are your thoughts on the "cum holy grail" supplement stack? Whenever I can manage to keep up the regimen for enough time, I've noticed significant results, but I'm skeptical that it's a placebo effect.