I did some exercise today

I wonder if exercise will improve my self-esteem.  I realize that my exercise regimen is nill, I do walk around the house and housework.  I get tired somewhat but I would like to do more.  What am I waiting for?  Procrastination I realized is a symptom of sabotage and low self-esteem.  The question is how do I overcome both procrastination and self-esteem?  Maybe exercise could help with both, but will it help with self-sabotage?  Only time will tell.