I've been putting off my NaNoWriMo commitments (writing a novel in thirty days). I fell behind on my daily word count. But I'm going to set aside a day to catch up. The best advice I can give is to just do it. Failure is necessary for the learning process, even if it takes quite a few failures. One can learn a lot from failure. It'll make you stronger in the end and when you do succeed you have more to be proud of. So keep trying and don't give up.
Amos Bronsen Alcott said, “Success is sweet and sweeter if long delayed and gotten through many struggles and defeats”