The age ol question. How to last longer

I wanted to see if any of you had any neat techniques to building up more stamina in bed. I am aware of kegels but I forget about them from time to time and am not sure if i am exercising the right muscle. At any rate I figured it couldnt hurt to ask if anyone else has found any other good techniques. Well my fiance has never complained, I am a giver by nature and want to give her the best experience possible.