The reason that works in my case is because of the taboo of the situation, breaking a moral norm that i would never do in my life is quite stimulating.
life is paradise It is old but quite good, you build a town, there is the possibility of romance and sex with many diverse characters, there is marriage and children, very complete and complex in some mechanics
I set an objective and I play until I complete it, in most cases until I have the game at 100%, the exception is if something has to be repeated a lot if that happens I leave it, as for time at night I have a couple of hours for this purpose