4.) You believe that you're too ordinary to have a life purpose.
You don't have to be Nelson Mandela to have a life purpose. You don't have to have high economic or educational status to be worthy of discovering it.
Your life purpose is a natural expression of who you are. The theme of it can be traced throughout your entire life. The impact on you and the rest of the world of articulating it, claiming it and purposely choosing activities that relate to it is both extraordinary and within your reach.
Any other obstacles in your way? I'd love to hear about them!