Rejections are far more common than offers, unfortunately. It's just how the system works. I've been rejected from every Tech job I've applied for, either because I wasn't qualified, they had an internal candidate, the job lost funding, or worst, I wasn't quite qualified *enough* and their first choice accepted it. The only places I've been outright accepted since graduation were the lab (which sucked ass in short order) and MishMish, which is awesome and I love.

First impressions are key in job interviews. You have to look and sound professional and confidant along with having the skills to back it up. I have firsthand experience on how hard that can be, especially after you've gotten rejection after rejection. It's easy to fall into the trap of "Well, they don't value me and my skills, so obviously I'm worthless and no one will ever hire me". It's not true, it just doesn't mean you've found the right match yet. But yes, it is possible your hair is a factor in not getting hired. Try getting it cut (go to a stylist and ask their advice. They can offer suggestions on what would look good on you), dress professionally, and present yourself professionally. This applies whether you're applying for an office job or a position at McDonalds (no fooling). Also, just putting a resumé in isn't enough. Follow up. Call back the places you're applying and ask if they've had a chance to review your resumé. It may not get you the job, but it will remind them of you and put yours on the top of the stack.

Best advice? If your mother isn't encouraging you or helping you succeed in your quest for work, she's being a hinderance. Ignore her and focus on the task at hand until you've achieved your goal. It's what I had to do with mine, and it works.