bkev said:

I'm starting to seriously consider getting a medical marijuana card. I've been really depressed lately, and for some reason smoking tends to motivate me - in other words, everything feels less hopeless and I remember I have a semblance of direction in my life. The only reservation I have is that I want to go into the field of education, which is technically a government job. Also, I might abuse it. I'd like to think I'm smart enough not to, but that's what I (falsely) said about alcohol.

Marijuana is generally not the best choice, as it tends to increase depression. Starting a depressant that you might likely abuse might be a bad choice.

If you're willing to get a card a go through a dispensary, perhaps you might be better off with something that treats depression.