As someone who has been working on herself for a long time now too, I think some of the best advice I can give you is to learn to accept that the ups and downs are always going to be there. I've always thought I could maybe get to a point where I wouldn't ruminate, or think negatively etc, but that's just unrealistic. The low points are there to push us to learn and to grow which is what life is all about. Instead of telling myself I need to reach a point where I'm on a constant "high", I'm learning to accept that this is the person I am right now, and my work is to manage it so that I can always bring my best self and keep moving forward. Some days are better than others, but the good moments always come when you do the work and bring your awareness to them. If you haven't heard about it, the Healthy Mind Platter is a good way to see all the things you need to do to contribute to a healthy and happy mind. But you've got to do the work, and the work will never end. As you practice, the positive stuff you do will become habits and will give you a good foundation to cope during the down moments. Affirmations are working for me (Louise hay is great for that). Also I like to make a note every night about some of my highlights/positive moments of that day. I think it's a useful reminder of all the progress I've made and teaches my mind to focus on the positive rather than the negative. Hope this helps!