Go for breakfast at McDonald or dairy queen Then hangout there with friends or family untill rest of Doha starts opening.
There is sale at Pearl,Qatar BHS and center point visit early to get best of the deals b4 they r sold out.
Lunch
Watch a movie
Sit and relax in any cafe watch utube or Facebook Or go swimming if ur a member
walk on the corniche when it's cool enough or better yet ride a bike
Dinner
Sleep