How are you?
What are you doing?
When was the last time you seriously thought about that? Take a minute to think about that. If you are doing good, it feels great. If not, maybe you are ready for change.
Take a look at Maslow’s Hierarchy of Needs
At the base, these are basic things everyone needs, as you go up the pyramid, they are less necessary (but they do add to happiness. Now say you have one of those bottom items – physiological or safety – gets taken away, what happens? Well, everything above it quickly goes away.

What can you do? You have to rebuild your pyramid. Lee Iacocca once said “The thing that lies at the foundation of positive change, the way I see it, is service to a fellow human being”. There is unconventional wisdom in this. Sometimes your perception of a situation is wrong, especially when you take some time and help someone who needs your help.
If you are truly convinced that is not the issue, replace what is causing your issue. So how do you do that? When do you do that? These are tough questions.
For me, anytime I have made a large change, I was scared and excited. I CHOSE to just be excited. The fear is a good thing, it keeps you on your toes, so you will succeed in what you do.
When do you make that change? I would say, when fear of the unknown is outweighed by the problem you are facing.
Here is a great podcast worth listening to on the subject.
The bottom line, take care of yourself. For every bad situation, there is a positive one to replace it.