"If you think you are too small to be effective, you have never been in the dark with a mosquito." Betty Reese
Think of this in terms of your get healthy efforts - every little change you make: food choice, temptation resistance, exercise, getting more sleep - no matter how small it may seem at the time or how long it may take to see results it all affects and benefits the change you're seeking and will show results in the end. Stay with it! Every little bit counts!