You only earn $12 in a month? I'm curious what your job is, but I think the amount is very small and if you already have a wife and children it will definitely be difficult to survive. Maybe you need to look for a better job considering you are already 28 years old
You may have missed that he lives in Cuba and that he is a doctor. The situation in Cuba is so disastrous that qualified professionals have trouble feeding themselves. Wonders of socialism.
CryptoDeivid, I think the best advice you have been given is to use the forum and over time you can join the signature campaigns that will pay you at least $50/week when you start, and over time you can aim for $100/week or more but it is a long term plan, to use the forum well regularly and not see money in about 9 months at least.