When we become frustrated or disillusioned, too many of us hope some change will drop from the sky and fall into our lap. We bitch and moan about how we aren't happy with what we are doing or wish we could do more. Most of us never move past the bitching and moaning stage and spend our lives trying to deal with the disappointment.
Change is never going to fall from the sky and land in our laps. Things will never magically get better if we don't do something about it. If you want a change, make a change. This doesn't always mean quit; this may mean make the changes you want to see. Sometimes, we do have to quit and search for something better, something that matters to us.
Many times, though, we have to take what we are doing and make it better. We have to make the changes we want to see. We have to turn what we are doing into something magical for us. This isn't easy, but people do this each and every day. These people are no better than you and me, they just know bitching and moaning does nothing to make things better. Figure out what needs to change and change it. Look within and find the happiness and do it. Most of us are doing what we, at one time, enjoyed doing. Before running away, look to see what you can change to bring back the old feelings.
If you find it, great! If not, then start searching for something else to make you happy. Look inside first. Quit second. We can't spend our lives chasing something if we don't know what that something is.