As opposed to attacking worry head on I propose a more oblique approach. But before you can do this you have to quite the static in your mind. Stop taking any drugs you've become addicted to and try to eliminate as much background noise as possible, this includes but is not limited to, newspapers,TV, Heavy metal or Rap music and certain forms of the internet. If you start this new regimen of watching what you put in your head as much as what your putting in your body, within a week or so your mind will quite sufficiently enough to begin.
First, start carefully listening to yourself, take note and study intently every thing you say or think, become conscious of the amazing number of doleful and negative remarks we are constantly uttering, either out loud or to ourselves. Initially your not going to like what you hear, it will be a revelation of just how negative and depressing you sound.
Second, be honest with yourself and ask "do I honestly believe what I'm saying or thinking?" or am I just mouthing and thinking negativism's because I falsely believe they serve me in some way.
Third, start to adopt the practice of trying to say or think the exact opposite of what you originally thought. This will be very difficult at first because we are addicted to the process of ready, shoot, aim, but with practice it becomes easier and easier. As you practice this it becomes a pleasure to start hearing positive remarks coming out of your mouth or head as opposed to the same old negative self-defeating bullshit you've been telling yourself or others for god knows how many years.
Fourth, keep track and note the change in the way you feel and others react as this new way of talking to yourself and others starts asserting itself. Instead of saying I feel OK, or hanging in there, when someone asks you how your feeling, say, I feel great or fantastic! When you start being positive and enthusiastic you'll be amazed, the effect it has on others and on you.
Fifth, actively look for ways to put the best connotation on the words and actions of every person and situation. Do this and you'll actually start stimulating good outcomes. By being proactive with your words and deeds instead of reactive you gain power and worry will disappear.