Considering how he's barely achieved anything he set out to achieve, or said he would, by 100 days, I think it's amusing that's he lamenting over his prior life
Remember "We will defeat ISIS in 30 days"? Lmfaoooo
Slightly tongue in cheek, but this does sum up some of his points that he said he do by 100 days.
For a more thorough look, he promised (On his website no less) to implement 10 specific bills that he named in his first 100 days. As of yet, he's achieved 0.
Obviously underestimated being a democratically elected leader. The election's losers want to stop you from doing a good job, and most of the time they succeed. Otherwise they lament the rise of a dictator and the destruction of democracy