Read somewhere today that it is good to substitute "could" for "should" and "won't" for "can't". Seems like good advice. e.g. "I could start focusing on trying to get into college". Doesn't carry the heavy baggage and guilt of a should. You could start focusing on getting into college.

You may decide not to. It's a decision, not an obligation that you have to obsess over. If you decide against it, you are freed up to consider other things without it hanging over you.
Also, how about chippering up your sig line. "Don't mind me, I'm too special for you to understand." Hate to see you putting yourself down in every post
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If the world seems cold to you, kindle fires to warm it - Lucy Larcom