It's what you focus on that matters. That said, it isn't always as easy as it sounds. Sometimes the pull to focus on things that don't serve our highest good, that darken our Spirit is terribly tempting. Getting my camera to focus on these buds and flowers took as many as 15 or 20 tries, because its impulse (if a camera can have impulses) was to focus on the background stumps and grass.
Sometimes we have to just keep trying in order to move our emotional focus from what's wrong to what's right. That's part of the purpose of daily gratitude. It moves us - even if only for a few minutes - to look at what's good. On days when it's horribly hot and humid and life is dropping bombs on you from one direction or another, it can be a real challenge. I don't always succeed, but I do try to pull myself back, to not deny my depression or whatever, but to at least balance it. I try to make the dark side work for its power over me. I try to let the Light win.