Oh yes, I have put off some really important things because I just couldn't bring myself to do them. In the end, I did do them, I just had to rush.
Only one time did I not
do it and that was a paper for a college class. I decided with my existing grade, I was just not going to bother with the paper, so I took the hit, but I was willing to do that because I was so ill at the time that I couldn't really pull it off. I calculated the cost and decided it was not that damaging to my overall grade, so I was fine with it.
I am sure there are other times I have decided to accept the consequences, I just can't recall at this moment!