I avoid thinking as much as possible, unless it's for an immediate practical application.
For me, roaming thoughts always end up in a downward spiral towards depression about how terrible the state of the world is, about how everyone is blindly enjoying their prisons without even realizing how much they are suffering, and how absurd it is that very little, if anything, can be done to make people realize this. Even worse is the realization that this is all blindingly obvious... but people are too caught up in the mundane day-to-day dramas they call "lives", to even begin to care. Having realized these truths is a really fucking heavy burden.
Consequently I don't think much any more, especially before bed. I meditate instead. It's the only way out. It's also probably the only thing saving me from some combination of depression, alcoholism, and insanity.
Having said that, it's great motivation to continue to further myself spiritually.
And use a lot of psychedelics.