You are called to serve God where you are until God unmistakably calls you elsewhere. And while it is not wrong to better yourself with a better paying job or a different position, that may not mean a better situation for you. Seek God first. That’s the key to knowing God’s will.
Wholeness, spiritual well-being, lack of worry, freedom from fear, even in the midst of troubling circumstances, can only come as we put into practice the knowledge of God that we have been given. Then you will experience God, then you will know Peace. Do you Trust Him, is your faith in Christ alone?