I gave up my last job and have had several interviews for jobs which I have flunked (some bad luck, some I could have done better but only know how I’d do better after the event ).
Please don't give up, is my best advice, @Pretty112. Interviews are best when you get lots of practice. Some will be a nightmare, then you'll find someone you gel with, and they give you a chance/you're a good fit for their team.
No matter how bad you feel, know that everyone bar-none has low points in their career, no light at the end of the tunnel etc.
Keep applying for jobs, it is very often a numbers game. NY is the ideal time for a job search.
Re gap in your work history, just say you took time out for a few months to attend to some family matters. No need to justify yourself, just leave it at that. Focus 100% on your skills, what you're good at and how you are the best match for the job.
Blag it like the rest of us! Once you're back in the workplace, you'll soon get into the swing, you just need that boost 
Do try to build up some new skills and refresh existing ones while you're looking, it will be a confidence builder.
Good luck, and come back on if you need advice on interview skills, CV, industry / role specific stuff, loads of help at hand if you need it!