Procrastination – Inaction Not Showing up

I am not showing up where I need to at work. It seems to be any task where I need to work with others or drive results from others. Thoughts: They don’t need me, I don’t know enough, I am not the expert, I don’t have the energy, it needs to be perfect. My guess is the feelings are fear, feeling unimportant, unneeded, tired, not confident. I seem to shy away from any task that involves others. If it’s a document I need to create on my own I can get it done. This may be my introversion shining through. How can I change these thoughts? How can I change this inaction, procrastination to get me to put myself out there and show up? What feelings will drive me to push through this? Help! Thanks!