Every sin we commit provides the opportunity for us to grow holier. Loss of inner peace is our first reminder. The worst thing you can possibly do is to ignore your past sins and continue on sinning. Thus your soul gets defiled more and more. This is evading God, a game in which you'll lose for sure. This is also playing Russian roulette with your own soul – what if you die expectedly? Of course, the right thing to do is to repent as soon as possible your sin and have the Lord make you clean again. Don't stop, for it is also the time to surrender to God more to reduce your chance of sinning again. With practice, each sin you commit will lead you to greater holiness. By the way, with more inner peace, your physical health will benefit too.