We can never know what strengths and revelations might be on the other side of our fears until we face them and feel them all the way through. True positive thinking is the mental stance of surrender, simply trusting the process. We learn to accept what is.
All meditation aims to bring the person, mind and body to silence, stillness and simplicity of spirit by means of an inner "object of attention". The act of attention is the inner sacrifice, and the work of paying attention is the school of letting go. The utter simplicity of such a way to joy and peace makes one laugh. God seduces us by simplicity.