I detect
I detect a lack of self-confidence. If you really love computer tech then you have to throw yourself into it. I know its hard to make a commitment at your age. It sounds to me (please take no offense) that you really lack the people skills, the marketing skills and hustle (make a buck) skills. All these skills can be obtained in short order. I opened my first business at the age of 21.
First, you need to present yourself as a professional. Dress like other professionals in your field. Haircut and grooming, mouthwash, clean teeth and nails. Good clothes and shoes. You need to have a professional business card. Professional looking advertising. Professional rate of $50 per hour. Practice talking into a mirror. What do you see? Because that is what others see. Talk slower, more confident. Maybe work for someone else for 6 months.
Some of the issues make be because your father is in the business. You need to decide if there are issues, what are they and work them out. Sometimes, the second generation feels they are entitled to the same success that the first generation currently enjoys. They don't see that it was a long haul to get from point "a" to point "b".
You need to read about marketing and take notes. I strongly recommend
www.claudewhitacre.com he's a great guy and knows marketing. I also recommend "How to sell anything to anyone" it's a very good book. I am going to try to send you a copy of my newspaper ad.
Lastly, you need to go out there and hustle, meet business people in a professional setting. That is networking -- meeting people that will need your service. Go to wakes, be visible. When you go into a store and buy something leave your business card. Leave your business card. Smile, alot.