Keeping yourself on the positive side is a good thing to not feel depressed or sad about some things that may be bothering you but maybe not always. It is also relevant as well to see and give importance to what you really feel on the inside and not just keeping yourself from staying happy. All the grief and/or grudges you may have within you could cause so much damage rather than trying to opening up. Sometimes you have to let it all out to be GENUINELY HAPPY.