I hear yah. Sometimes a fresh start will be needed inorder to focus more on a good results. However, it is also important to bow to yourself that this is it and you will do the best as you can to get that consistency, make changes, discipline or what not. I have seen a lot of people keep starting over again but they never get ahead or moved forward from where they are at because they still do what they did before..
There is a quote that says " Doing the same thing over and over again and expect a different result is called Insanity"...Its tough I know..
Good-luck with a new start!