My advice, do not meditate! haha, take some time off.
Meditation its supposed to be a fun thing, what u are doing is having dislike (craving) to something, and u are pushing it trying to change that aversion into something else. And that will cause a lot of tightness until u finally say ok cant take it anymore and u will change your pattern.
If u take some time off u will begin to see how that pushing was causing tightness, and thats the actual meditation!, seeing how u went from a unwholesome state into a wholesome, and that will provide u with interest into how mind works and meditation in general.