I just lost my job. Company says I am not competent enough for the position. I have been trying but somehow I just can't do well. I am the main Breadwinner. 2 kids. My Wife stays at home. I do I tell her. I feel ashame.my wife already says I dont earn enough for the family and ask me to take on second income

Just be honest to your wife. It happened to me before when I was laid off due to retrenchment. My wife is supportive during that time. She help to support the family while I was trying my best to get a new job. Don't give up and keep all your stress by yourself. This is the time when you will realise your family will still stick to you even when you have fallen. Just hang on there and I believe you will find a job soon.