My two cents - psychedelics can open your mind to a new way of processing information and thinking about your daily existence. Anecdotally, it's happened to me over the last 11+ years (not through psychedelics, but through other spiritual practices like meditation). The result is that I'm less angry, less judgmental, less likely to fly off the handle. Much better at processing information, removing clutter (bullshit), and disassociating from perceptions and feelings that used to define me.
In a very practical manner, this has made my interactions with everyone around me much..."better" doesn't feel like the right word but I'll use it here anyway. This is very simple - I'm "happier" (again, not the right word, but it'll do for now), I end up treating others better, which in turn has positive impacts on their lives and hopefully the lives of others that they engage with.
