When will I have money and anxieties stop

I’ve just switched my job 3 months ago, but all of a sudden I feel like I don’t know anything and am super anxious. My goal in life is the climb the ladder, be successful, and have money for me and my family to live comfortable. On paper everything looks good but in reality I feel that everything will fall down one day. Can someone give advice on (a) when things will get better, and (b)if there’s anything I can do?

I’ve just switched my job 3 months ago, but all of a sudden I feel like I don’t know anything and am super anxious. My goal in life is the climb the ladder, be successful, and have money for me and my family to live comfortable. On paper everything looks good but in reality I feel that everything will fall down one day. Can someone give advice on (a) when things will get better, and (b)if there’s anything I can do?