Wemgem, I would recommend reading the book "The Power of Now" by Eckhart Tolle and APPLYING the principles he talks about in your life. Just reading for an intellectual understanding won't make a difference. It was the very first thing that started to unlock me from my anxiety problems.
Meditating on my breath really helped too. Focusing on the sensation of my breath as it enters and leaves a nostril is what you do. I would recommend finding a teacher in your area or at least find some information on YouTube. This really helped me unlock from my anxiety too.
Taking the actions of love toward other people really helped me too. Start treating the people around you with more love. Do more loving things for them. Start helping people. When I did this, the anxiety just melted away over time.
More than anything, take whatever actions you feel drawn to take in dealing with your anxiety. When your mind sees that you are serious about getting to the core of problem, the anxiety will decrease since it has served its purpose. It is like an alarm bell letting you know that you have some issues that need to be dealt with.