Start here: https://nesslabs.com/how-to-think-better This isn’t an endorsement (though I do like ness labs). That article offers practical evidence-based starting points and additional resources at the end.
There are many people/systems/schools that will offer strategies and solutions. Some are practical and effective. None of them are a replacement for learning what it means to think well, learning how to think well, or actually thinking well.
The next step is learning the jargon of philosophy so you can ask meaningful questions and parse the answers (this is true for any new discipline). I recommend reading anything on the topics of epistemology, ethics, and aesthetics, which resonate with you. Then find others to discuss what you’ve read. You do not have to be right or knowledgeable to earn a voice in the conversation: only an interest in discovering how you might be wrong and helping others discern the same for themselves.
If you haven’t read any classical philosophy but are interested I recommend Euthyphro. It’s brief, poignant, and entertaining.
I hope this helps! Happy to discuss further as well.
I’m excited to see they’re going fully open source. Looks like the last steps to making the sync server self-hostable are in the works. Do you use their paid service? If so: any complaints or caveats?