I used to have a system of implicit moral contract with myself.

I saw my own situation as an iterated prisoner dilemma; any of my future selves could desist against its other selves, negating the hopes and dreams of past selves, depriving further selves of certain prospects, all of that for a short term benefit that would have negative long term consequences. The first to desist would win something on the moment, the others loose their investment or their potential. So I tried to keep to my word and plan ahead.

Not sure if I'm still strong willed enough to affirm I'm working like that. Actually, probably not in most cases.