Feeling lost and scared

I had an amazing job in a product based company, I had L1 visa and was based in US for a year as well. Family was doing good, I was loving my job. Finally I was feeling content. It’s so difficult to be content with what one have. But I was really happy, secure financially and psychologically. Everything came crashing down when I made a mistake and was fired. I had to come back to India, suddenly I was out of job and very less savings. Luckily I landed a job but it wasn’t challenging or fulfilling, I left it after 18 months. I recently joined another company but here also I am not feeling content. Both are service based and the current market conditions are not giving me confidence. I am very well paid but I have this constant fear that if I commit a mistake I will get fired or since my salary is high if business suffers I will be first one to get axed. I have been trying to land a job in product based companies but haven’t had any luck. I just don’t know how to deal with this constant fear that I might loose my job again. I have been trying to share this fear with some one for a very long time but I don’t want to trouble my family with this… Uh