Use Meta Space-Time Manipulation to make that day infinite for me, and then work on giving myself my favorite powers.

Honestly same as nick here and once I have my favorite powers I'd make the day go back to normal since anything impacted by that power is gonna be permanently effected by it I would keep that power regardless if I was only supposed to have it for one day since I would have absolute wish and complete arsenal

I'd be confused, then be like

Huh, alright time for some reality tomfoolery

Somehow gibe myself ability creation

And then just stop time to figure out what the hell am I gonna do next

Damn nice idea @Nicholas8293

Same as Nick

Extend time for the power next is to see if you realize the applications of every single power in application of 1 power so ahhhhhh I can destroy the universe and make it again and make powers