If you are into reading articles about personal effectiveness ( goals, productivity, time management, motivation, self-discipline, overcoming procrastination, habits, organizing, problem-solving, decision-making, etc ... ) but you don't care for mystical beliefs like Intention Manifestation ( IM ) you might enjoy Lifehack.org:
Lifehack.org : Productivity, Getting Things Done and Lifehacks Blog
I've been reading the blog for about a month now and I am pleased with it.
The blog updates regularly. It accepts comments. The comments are generally useful. The blogged articles come from a variety of authors so you get an interesting mix of topics, expertise, and approaches.
The forum there is
DEAD so this site is probably better if you want to interact with people with an interest in self improvement.
Standard Disclaimer: I am not affiliated with lifehack.org in any way