Wow, that’s a pregnant question that can be answered simply or after having given it a great deal of thought. I wrote the following as much for myself as to answer your question:
Learn to identify what really matters and affects YOU and yours, then give reasonable attention to verify those issues. Keep a very small percentage of your attention on the horizon for emerging hazards.
For a happy life assume the best of people until you know otherwise, trust your judgement and don’t give second chances without a great deal of consideration. Walk away from toxic people ASAP. There are MANY MANY others out there worthy of your friendship and trust.
Thank you for helping me! nostr:note1z5f2kflcsqf5fxxnr8myl965j4ruwrwmz97ca3v647a24gn72utqsusgdj