A great way to illicit and change in your mood for the positive is to get a hair cut. A simple thing like having a trim can make cause a dramatic shift in your feelings. Not only will you look better (hopefully), which will raise your self-esteem, but also you will feel better because you have devoted some time and effort to 'yourself'. There's nothing wrong with a bit of pampering once in a while.
Of course there is a hidden meaning in all this; make a conscious effort to sort out what needs to be sorted and the results can only be for the good. Start with the simple things in life and then move on to the less simple. Lots of small little changes for the better soon add up to greater peace and well being.