i have been trying to hit the 10-6am target but been failing miserably lol. 
But yes. The last 2 weeks of lack of sleep and rushing my project final roll out has allowed stress and depression to creep in, especially when exercise is not there. 
But when we set small targets and achieve them little by little this also helps in kicking out the depression state of mind. 
The first step is the hardest, but once it is achieved depression is no longer an excuse to bind us behind. 
Good reminder. A healthy diet is also good for depression. A good punch of serotonin booster food like banana is something our gut and brain needs. (As an example)
a healthy gut, a strong mind. -_^