On the side of the shower opening that will support the door, hold a jamb piece against the wall so that its lower end fits into the base track. Without moving the track, use a 4-foot level to adjust the jamb until it's plumb. Stick a pencil through the jamb's screw holes to mark the wall.
I was asked to answer, so I'll give this my best shot, please know that I do not have any specialized or trained medical knowledge, only practical experience from Ashtanga yoga and meditation. So, yes, walking does reduce anxiety. 1.
The good news is that a recent study found 2 minutes of walking every hour could help reverse the negative effects of sitting. The researchers found that 2 minutes each hour of even light-intensity activity (such as walking) equaled a 33% lower risk of death for the 3,242 adults in the study.