Do I have a full-time job? No. Do I have time to spend with you? No. Why? Because I have three part-time jobs and I am a full-time student. Sure I don't have a full-time job but with everything that I am doing every day in my life means that if you want to hang out with me you have to ask me in advance by at least a week. I have to put it in my planner and if I don't have time that week I am going to tell you no.
My jobs and my education are a little more important than spending a half hour or an hour with you. We are still friends but I am going to work and make money every chance I have and I am going to study hard because my grades are important. I know what I need as my overall grade point average to be able to get into graduate school so that I can eventually have a masters degree.
At the end of the day I still love my friends and my family but at the end of the day if it comes down to a chance to make money or to spend the extra couple of hours studying for an exam or writing a paper I will do that over spending time with important people in my life. This isn't because I don't want to spend time with people that are important in my life it's because other things take priority in my life.
At the end of the day, I may not have a full-time job but I have three part-time jobs and I am a full-time student. At the end of the day, those who are important in my life know that I am busy and that I am not blowing them off but instead that I am just trying to do the best that I can for myself.