screw up one's courage
to build up one's courage for something
I screwed up my courage and asked my supervisor to transfer me to a different department.
Most Useless Inventions Ever
This is supposed to give men who are balding some extra hair on top.However this is not the way to go, the hat is not fooling anyone.Also, what man wants to have hair that looks like carpeting.It seems like being bald would be a better alternative.Besides, Michael Jordan, Tae Diggs, and Vin Diesel pull it off well.