Does having a job really make you more serious and stressful?

Congratulations on getting a job, especially if this is your remit for the future in IT. Firstly do you feel tired & stressed out that is the most important issue? I'm sure you do a little as this is a New concept for you & times are changing in your life. Yes your friends have seen a change in your lifestyle it is called 'growing up, into an adult' .It is quite obvious that your friends have noticed this change in attitude, they can only reflect on the way you conducted yourself before starting work, so you should be proud & keep up the good work you are doing. You are a young man & maybe as you get older there will be a time when you will be serious, stress is an unknown issue that only you can contain, (hopefully never). I wish you all the very best for your future. Also keep working hard at college! :>)