What is wrong with my husband, mentally?

Here is what my husband has been like in the past 2 years---

fired from 2 jobs for lying and petty theft (saying he was home sick, but going to hockey, "borrowing" petty change from office, etc)

Going into rages- yelling and screaming and punching holes in walls, then an hour later being calm and happy, and acting like nothing happened

One day says he loves a book, the next day raging about how he hates it

Saying he hates people, randomly and without reason

Saying our one child is "such a perfect kid" and saying the other one "is a pain in the *** and has something wrong with him"

Spends days without barely talking to anyone

Lying about money- saying he got paid for small jobs he does, but not having the $ and no proof he got paid

Saying he called someone and talked to them- when I check with that person, they say they havent talked to him

Saying he did the laundry, then finding it still in the laundry room closet

Barely sleeping- maybe like 4 hours a day, tops.

Lying on the couch all day and watching tv, then going into a total rage if asked to do something

Says he took the dog for a walk to get out of the house, but when I ask him where the leash is, he will say "oh, i dont know i put it down by the door"-- (it was with me in my car all day)

Refusing to talk to family, and totally alienating my family, too- will send them emails saying "we" no longer want them in our lives

Says he went to the bank and deposited a cheque of mine, but the bank has no proof of it. Then when I ask him about it, he says they must have lost it, not his fault.

Avoiding phone calls except from his hockey buddies, to talk about hockey- that's literally ALL he is interested in lately

Will tell people he works as a consultant and makes $200 grand a year- when really he is home on the couch all day, unemployed.

He says if I leave him he will fight me for the kids, and make my life hell

Has gotten THOUSANDS of dollars in traffic tickets lately- mainly due to him not registering our van, not paying tickets, having suspended license, telling me he paid the car insurance but not doing so, etc. he also stole a license plate from our neighbors car, because we didnt haver any on our new van, which is now impounded due to this issue.

Will NOT accept responsibility for anything- says everyone hates him, I hate him, I want him to leave, etc. It is NEVER his fault, according to him.

Admits he lies to me constantly, he "doesnt know why"

I am at my wits end. I have found a new place to live for the kids and I, and will be leaving within a month. HE just seems so unstable, it's really freaking me out. I wish I could deal, because I love him, but the past 3 years have been hell. He REFUSES to get help, says our relationship is "awesome, why would we need help??".

Do you have any idea what could be wrong??? If I find something online to show him, to try to convince him to seek help, it would be great. I also have an appointment for the kids and I to see a counsellor next week.

thanks.