Time don't wait

I have so many things to do and so many things on my mind that sometimes I come for meetings or presentations not prepared. Not that I didn't want to prepare but with so many things coming all at once,  it makes it impossible to be prepared for all eventualities. It resulted in me sometimes unable to response to the unexpected in the way I would like to. I stutter. I failed to answer confidently. Mostly because I don't know the answer. I don't like it because it looks bad on me. I need to pay more attention to all  the things that I am involved with. I need to sit down and go through all the information. Unfortunately, the bloody meetings sometimes take up all of my time.