I was unemployed for a couple of months, then finally took a job at a great company, where I feel great. Things were finally picking up. I thought I was fortunate because I had my wife who supported me through it all.
Then a month ago my wife, who I thought would be my partner for life left me. Bam. You think a failing company is bad, try this. I just got thrown back to being 25 and looking for a date, sth I thought I left behind me forever. It was I hope the final price I payed for concentrating too much on my startup the preceeding years.
Lessons learned? Too many, but I'll just say this. The buddhists are right, the only constant in life is change. Shit will happen to you, whether you're rich or poor. Companies will go under. You may lose money. You will be fired from jobs. Your partner may not turn out to be who you thought she is. Somebody close to you could get sick. Your parents will die. It's just life. You have to accept these things will happen and do your best to prepare for them.
It's though, some people are much better at it than others, but it's normal if you can't get over these things in a day or week. Medicine might help (eg. sleep, anxiety), but go easy with that stuff.
Don't lie to your parents. They're your safe harbour, they will understand and help you. Tell them what's going on. I'm 32 and although it doesn't feel very manly, talking to my parents about my current situation is what's keeping me sane.