If you listen to too much negative feedback (or if you take it too personally), you are in danger of internalizing the criticism. This means that you start being critical of yourself. If you do this too much, you won't have the emotional strength to accomplish anything.
One way the criticism can be internalized is if you take it personally. In other words, do you feel that your methods are being criticized, or do you feel that YOU are being criticized? Did your methods fail, or did YOU fail? In reality, it's always the methods that fail. Methods could mean the way you do something, the way you make a decision, your habits, or even your attitude. These are all separate from your identity. Even if it's your attitude that is faulty, that doesn't make you a bad person. Rude people might think the problem is you--and might convince you to believe the same thing--but your self-worth is not the issue. Your self-worth is constant from the day you are born until the day you die. It's your methods that could be improved. Everybody's could.
Criticism can also be internalized if you are too exhausted to think about the issue objectively. If you are overworked or are facing a health issue (disease or lacking sleep, calories, nutrition, water, exercise, rest, laughter, etc.), you might not have the strength to handle the criticism constructively. In that case, you will have a greater tendency to be upset by the things that people say to you. The solution here is to make progress against the health issue first before thinking about the criticism. In some situations, the solution could be simple: Go out for a jog, eat a good meal, drink some water, watch a funny TV show, etc.--and THEN think about the criticism.
A third way that criticism can be internalized is if you hear too much criticism. If you listen to a negative person too much or are surrounded by negative people, you can start to doubt yourself. Or, you can spend so much time worrying about what critical remark you'll hear next that you'll drive yourself crazy with worry. In either case, you get stuck in a loop of negative thoughts which is difficult to escape. So how do you escape?
Tune out the negative speakers somehow. Spend less time with them. Screen your phone calls with voice mail. Spend more time with positive people, less with negative ones.
Every time you think a negative thought, counter it with a positive one. For example, if you think, "I'm not worthy," respond with, "My self-worth is the same as everyone else's. I just want to improve my methods." If you think, "Aunt Rose is going to criticize me when she sees this," respond with, "I'm not doing this for Aunt Rose's benefit" or "Aunt Rose criticizes everything anyway, so just ignore her." The solution for negative self-talk is lots and lots of positive self-talk.
Take little steps to start improving your habits. As long as you are constantly improving (even very slowly with setbacks), you can have enough self-confidence to reduce your procrastination.
Read books about the issue at hand. Keep learning new methods (including new ways of thinking) which can help you to improve, putting you in control.
External criticism is bad enough. Internal criticism is hell! You won't make much progress against procrastination until you have discovered and dealt with your internal criticism.