I have gotten massively better with acting upon my emotions. One thing I always keep in mind that I either learned here a while ago or someplace else. It said, you are not responsible for the first thought/emotion, but you are responsible for the second, meaning first emotion will come without your control. However, it is your responsibility to redirect, thus making it yourself accountable for the succeeding emotion. Next up, you are responsible for your first action. 
This taught me not to reject my entire self. There is a part of me that needs help, but the other side with proper help and control can help my other helpless side.