Am i over thinking things or do i take myself to serious?

every time am in a social gathering or dealing with a problem of some kind i seem to look at it from 20 different point of views not for the plain simple fact that it is. example: am lifting wieghts and i dont see the progress so i start looking at it in different ways like am too lazy and i have to this and that differently. 2 nd example am in a resturant am eating and i start thinking about everyone in my surrounding who will get offended if i say something improper...?? and help