I think to be happy there are some factors you must take it in yournto consideration, such as satisfaction, searching about happiness in detaillooking for happiness in the small things and seeking to happiness.

"searching about happiness in details"
The correction I made is mostly saying the same thing, but the phrasing is much more common and natural

"looking for happiness in the small things and seeking happiness"
While this is now grammatically correct, these two clauses seem to be mostly redundant in context

I think to be happy there are some factors you must take it in yournto consideration such as satisfaction, searching aboutfor happiness in details and seeking tout happiness.