As northernjambo says unfortunately it will always be there, the key is to know what triggers you and build up your defences for when these things happen. I was absolutely flying up until about march, I stopped seeing the psychologist because every appointment I just came in and said I felt great. Then I suffered a bereavement and I went into a bit of a tailspin again. All the old symptoms came back, not wanting to get up, not wanting to speak to anyone, no concentration, no motivation, no confidence and more! It made me realise that no matter how good I'm doing there is always a fragility to it and you can't get complacent. The key is to catch it early and have people around you that you can say to that you're about to hit a bad moment. They can then help you through it. Worst thing you can do is retreat into your shell, or it is for me anyway.