It's very easy to attack ourselves. Even comforting in its familiarity, but you must resist this urge at all costs. Dwelling on the past or your perceived flaws will do nothing but keep you under emotional house arrest and hamper your progress. Commit yourself to growth and reward yourself with kindness for choosing to do so!
Chris Hardwick (2011). “The Nerdist Way: How to Reach the Next Level (In Real Life)”, p.225, Penguin