Much of trouble we face comes from the fact the many of our wants are confliting with each other [1: examles].
Some of these are unavoidable in a complex reality whihc is not built to fulfill our wants.
Other conflicts are only apparant conflicts. They arise because in the default state of things they are conflicting. But there are ways around.
Finding ways around conflicts (i.e. learning how to eat the cake and have it, too) may hold a big promise to improve lfie quality. I would guess that people just do not explore all space of ways to put things together.
Caveat: I may prove wrong. THnking too much, tricking things, etc., and getting used to eat the cake etc. may prove negative on balance. I hope I am right.
[1: examples] Baumeister holds that over half of self-defeating behavriors are actually trade-offs. Alcohol abuse come from wanting the joy of alcohol but neglecting the consequences. and so on.
There are more examples, whihc I may add later.