<human>: Can you provide a brief overview of the text?

Hello reddit, I recently signed a contract with a great company, for a great job which I am very excited about. I graduate college in a month and start my new career in 2 months. I have one major concern, I have NEVER been or attempted to be a 9-5er. This doesn't mean I am not interested in and willing to become one. I have had afternoon classes (never a class before noon) for almost 2 years, and usually get to bed around 3-4am. I have worked a seasonal position where I had to wake up at 7am 7 days a week for 2 months straight(I didn't have any problems doing that). So Has anyone had to or chosen to adapt to being a 9-5er and how did you do it?
<bot>: I am starting a dream job but have been waking up at noon and going to sleep at 4am for 2 years. Advice on how to adapt?