Life : Nothing in particular as such. May be because I am a guy who finds positives even in so called "Worst decisions". They teach you something and help you get better. May be wasting 3 years doing job in a big Indian IT company. I should have get into startups earlier so that I could have failed earlier, learned earlier, improved earlier. If not in my own startup, I should have worked in some other startups instead of wasting my 2-3 years as ABAP developer.
Programming : Not testing my code properly(I only do manual user testing). I still don't do it. I find it too boring. May be I'm too lazy to do that.