Unhappy with your current job/position/company? Assume that you want to do something very different in order to be satisfied?
That's where many of us get stuck. The need for change is off set by the complexities of what that means. Does it mean starting over? How will we know what the right thing is? After all, weren't we wrong before?
Do you remember when you loved what you were doing? Or, at least when you thought you would? Perhaps you developed a skill set and credentials to go along with that initial sense that "this" was right for you.
Assume for a moment that nothing is wasted. Every effort, lesson, credential is still important to whatever you do next. The criterion for the change is not that it be different (as much as you may feel that right now), but that it fulfills you. Assume that, other than the negative experience you now have, everything you have done and are doing will apply to what you do next. It simply must change form enough to eliminate the negative. You WILL love it again when the negative is removed!
Make a list of all your skills.
Make a list of the things you remember that you loved to do.
Add the things you still like.
Pretend that there is a perfect job with your name on it that is still in the same field/industry/area of expertise that you now engage in. But, assume that its form is different, more satisfying, and much more suited to who you are. Know that it will utilize everything you have learned to do and that you will not have wasted one moment doing the wrong thing.
Ask yourself what you are still learning that you need to learn. Learn it so that you can move on.