Acts 18:3 So, because he was of the same trade, he stayed with them and worked; for by occupation they were tentmakers.
No you don’t have to give up on the world, your job and everything you are just to become a Christian. We still have to pay our way just as others do and we still have to eat!
But changing your attitude toward your work, be in in school, college or out in the world as a professional, having a positive attitude toward your work will be noticed.
God continues to want us to be a light in our lives, shining for Him and being positive, honest and diligent in what we do is a good start!