Hello and welcome to LessWrong!
Glad to hear you've already started digging in to some of the literature and found it to your liking. Yes, it's easy, when you have no community that encourages improvement, to fall into passwords, caches, and generally "not thinking." We can even forget to hope that we can make things better, as you've discovered. I'm sure you'll find plenty of people who can relate here and who are glad to help each other not fall back into those habits.
Since you seem to have such a focus on self-improvement and applying rationality to personal habits, don't hesitate to write about your experiences using rationality or your own personal improvements. Personal anecdotes are, of course, not verifiable experiments, but they are still experiences. The Group Rationality Diary may interest you in that regard. You can share your own experiences, see what others have done, discuss personal habits and experiments.
If you'd like a bit more discussion, you can go to the Open Thread or make a new Discussion post, though you might want to save that latter option for a more developed, researched topic. Starting in the Open Thread will not only help give you a chance to experience LW conversation and habits, but it can also help develop an idea you have before you present it as a full post.
Applied rationality, or, as some refer to it around here, "the martial art of rationality," is one of our big projects of interest. It's right there in the title of the blog itself after all. We want to improve our abilities to improve the world. So we sharpen each other, and we develop new methods, find new discoveries, perform new experiments on using our tool kit in the larger world. We certainly welcome a new voice and new perspective to the conversation. Given your wide background, your voice will be a wonderful addition.
I hope to read some of your ideas very soon!
Thank you for warm welcome and thorough information!
A few notes about the site mechanics
A few notes about the community
If English is not your first language, don't let that make you afraid to post or comment. You can get English help on Discussion- or Main-level posts by sending a PM to one of the following users (use the "send message" link on the upper right of their user page). Either put the text of the post in the PM, or just say that you'd like English help and you'll get a response with an email address.
* Normal_Anomaly
* Randaly
* shokwave
* Barry Cotter
A note for theists: you will find the Less Wrong community to be predominantly atheist, though not completely so, and most of us are genuinely respectful of religious people who keep the usual community norms. It's worth saying that we might think religion is off-topic in some places where you think it's on-topic, so be thoughtful about where and how you start explicitly talking about it; some of us are happy to talk about religion, some of us aren't interested. Bear in mind that many of us really, truly have given full consideration to theistic claims and found them to be false, so starting with the most common arguments is pretty likely just to annoy people. Anyhow, it's absolutely OK to mention that you're religious in your welcome post and to invite a discussion there.
A list of some posts that are pretty awesome
I recommend the major sequences to everybody, but I realize how daunting they look at first. So for purposes of immediate gratification, the following posts are particularly interesting/illuminating/provocative and don't require any previous reading:
More suggestions are welcome! Or just check out the top-rated posts from the history of Less Wrong. Most posts at +50 or more are well worth your time.
Welcome to Less Wrong, and we look forward to hearing from you throughout the site!
Once a post gets over 500 comments, the site stops showing them all by default. If this post has 500 comments and you have 20 karma, please do start the next welcome post; a new post is a good perennial way to encourage newcomers and lurkers to introduce themselves. (Step-by-step, foolproof instructions here; takes <180seconds.)
If there's anything I should add or update on this post (especially broken links), please send me a private message—I may not notice a comment on the post.
Finally, a big thank you to everyone that helped write this post via its predecessors!