Anxiety, lack of confidence. Straight.

Hi, I have been facing this concern since many years now. I always get these panic attacks whenever I'm facing an interview, new cases, despite being in this profession for over 8 years. I always have this fear of being not good enough and that people would think that I'm bad at my job. Also, it feels that what I do is not material and meaningless. This was not the case in initial years as i used to take a lot of pride in my work. Ultimately the anxiety is getting reflected in my output, as I have got negative feedback about my work as well as attitude. It is raising insecurities about future as I'm always worried about post retirement or what would happen if I loose my job. It is also affecting my personal relationships. Despite knowing that I'm lacking on some aspects, I'm not taking any corrective measures. I took 15 days off from my job as I dread going office. All I did in these 15 days was stayed in bed and avoid human interaction. Seems I have lost ability to think straight.