If you wake up every Monday morning to complain about going to work, then you should change your job.
Many workers aren't productive at work because they never liked their jobs. They are only working so as to get paid at the end of the month.
How can you have such a shallow thought-scope as this and expect to amount to anything in life?
To become anything, you must first fall in love with what you do. It's from that you grow to become what you wish.
Until this happens, you are just wasting your time and resources--working where you are not being productive nor growing.