[lioeters]

I think worry, anxiety and paranoia are normally healthy instincts (planning for the future) that got out of control. From the description, it sounds like that "circuit" has gone overdrive and this generally anxious state has become habitual.

As others have noted, and from my own experience, I believe you can self-program or (de-)hypnotize yourself, to enforce healthier thought/behavior patterns consciously. Sometimes, the help of others is just what you need, whether it's spouse, friend, or a professional. The unbalance ("disorder") could have hormonal/chemical causes too, so would recommend plenty of sunshine, exercise (oxygen), balanced diet, vitamins..

I'll also echo another commeter's emphasis on the value of humor to alleviate worries and have a more open outlook on life.