I had worked for 10 years in the food service industry and juggled 2 or 3 jobs during my time at school. I thought I knew what working hard was like. Remember, as you transition into the job force it is like starting out at a freshman again. You won't be great right away. Keep an open mind, stay hungry, and embrace the process. If your job is going to be one of the main things in your adult life you don't want to be able to master it right away and turn your brain off. Autopilot for 40 years is not living. In your tough moments be grateful for the challenge. You will get through them and you will grow.