I guess that you personally would profit from more filtering of your thoughts before you express them to other people. On LW you could easily have a higher positive karma rating than 53% by thinking more about how other people are likely to receive your posts. LW karma isn't perfect but it's an easy signal you can use as feedback.
When it comes to face to face interaction I think high feedback workshops are good. I would avoid PUA style training that centers around antagonistic interactions. If you want to speak without much filtering Radical Honesty workshops and Authentic Relating/Circling workshops can help you to communicate in a socially acceptable way.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.