Sentience > Intelligence
For a long time I was confused as to why there were so many bad decisions being made by people I knew and people I've heard about. In particular I would meet lots of people who are way smarter than me but yet aren't making as good decisions. And even I would know what I need to do but yet not do it.
I finally realized that the key for being effective, that is to say getting the results you want, is clear thinking rather than brains. This basically means that you are aware of the real reasons you do things rather than the ostensible surface reason you give yourself.