I always can attest that a positive mindset really works and I practice the principles daily because I have seen results. I remember the mantra, ask and act like you have what you want. The Secret, The Magic and The Power are all great motivational books that help in so many ways.
Let me start off by saying I am so grateful to have read these books because positive energy does equal positive outcomes. I practiced this mantra when my dog was in the hospital and he had been there for a week. Instead of just being negative, something inside me said to remember the The Secret book and that I should act as though he will get better and he would come home. So the next day I cleaned the house as if he would be coming home the next day. As a result of this he came home the next day. You just have to remain positive no matter how hard it may seem, you just have to be positive.
I remember when my relationship with my friend seemed to not go the way I wanted. I just remembered to act as though we were still speaking and to write a list of things that I was grateful for about him. Then I just let it go and let God work on my relationship. This was less stressful because I knew that we would be together but I had to be patient and never give up. I am now focusing on myself being the best I can be so when we get to together we can be the best couple ever.
In conclusion, just keep your faith and let it go and God/the Universe will handle the rest. Stay positive and read those books I mentioned because they really help.