Okay, things I'm getting here: library, gun, you being shot, considering death. My resource is usually Dream Moods for interpreting my dreams, and that's what I've quoted below.
Symbols:
To dream that you are in a library signifies your search for knowledge and your hunger for ideas. You may be trying to seek out new meanings to life. You need to study and evaluate your situation before taking action.
To see a gun in your dream represents aggression, anger, and potential danger. You could be on the defensive about something. Or you may be dealing with issues of passiveness/aggressiveness and authority/dependence.
To dream that someone is shooting you with a gun suggests that you are experiencing some confrontation in your waking life. You feel victimized in a situation or that you are being targeted.
To dream that you are shot or being shot at represents a form of self-punishment that you may be subconsciously imposing on yourself. You may have done something that you are ashamed of or are not proud of.
To have a near death experience in your dream implies that you are experience a relapse of sorts. You are reverting back to your old habits and ways. Alternatively, the dream indicates that you are being given a second chance or second try at something.
My interpretation:
This has to do with knowledge or the meaning of life. You know that you need to do some self-evaluation before you take more steps. You may be feeling some resentment towards authority or be defensive about your thoughts-- and with good reason, there is some confrontation happening in waking life.
That said, you are the one punishing yourself the most, and you probably don't deserve it. Neutral self-evaluation does not mean self-punishment. This could be something that is a habit of yours, something you have been trying to stay away from, but here it is again. Alternatively, like the dictionary said, this could be a second chance at something that you really don't want to fuck up.
Note:
My interpretation is obviously biased towards how my own life is going, but that was my try for you!