It is easy to forget why we do the things we do. As human we fall into routine not forget what our purpose is. You should always check yourself and situation to analyze if you possess a purpose.
Once you know what your ultimate goal is, that is when you can become invested in what you are doing. Without a purpose one cannot live up to their full potential nor move up from the current position they are in. Having a purpose gives people something they can look forward to and work toward. So make sure you have a purpose in every little thing you do.