Life is a very tough world, I've lost both parents in the space of 3 years, now dealing with their aftermath, moving house, work stress, life stress, family stress. In fact I'm actually still working (all be it in the hotel and have a five minute wine break), and I can't understand how I keep going! I went to the doctors recently, had my blood taken and blood pressure, turns out I'm actually OK, much to my surprise.
Something I actually learnt myself, no prompting, and to be fair it's common sense. If you want something to change, you need to make it happen. The mind is a powerful computer that can play many mind games, from happiness to depression.
If I feel down, I do something that makes me happy, and believe it or not just having a chat with a mate and having a laugh makes for a wonderful sedative to pain. There's no harm in seeing a doc, that's what they're there for. Chat, discuss, explain how you feel. They will survey the best option/outcome of helping you along. Work wise you need to stay motivated and say "I will find a suitable job". As soon as you start doubting yourself, and with how you feel, you'll end up being and feeling negative.
And don't feel worried about posting your feelings on here. I did the same regarding my parents in April, and it really did help. This isn't FaceBook, it's dedicated forum folk here to help, whether that be a mechanical lending hand, advice on parts, or just discussing life in general.
Don't worry you'll make it through the hard times....... be positive and try and find the opportunity to have a giggle and smile.