Obstacle or Challenge

This past year my 2nd wife ask for a divorce. It caught me and my son by surprise. This was a different type of divorce . We never really argued but we were at odds at times. I found out that she had doubts about her feeling all the time. Another shocker. Well thats how somethings go .Life is not fair sometimes ,right? Well it is that way I know it. So whats the challenge or obstacle?
I had resigned my position so I could be with her with her new job . I had some reservations about the move. We would be far from friends and her family. My son would be with us and he would be far from his mother. We had enough money for me to take the year off and help my son with his schooling. He has very bad dyslexia. The school that was by the house was the best school in the state and very open to parent participation. In short for my son the year was a complete success. I made alot of new friends and was able to organize a bike race in the town.
Then the bomb shell came. In a matter of two months my son and I went from living in a beautiful house with 2 acres to living with my 1st wife p/t so I can save money and be with my son . I'm struggling with the divorce and so is my son. I guess thats normal since I did'nt want the divorce. WHat has been been stalling the forward movement is two things. I cant get a job that I would be making enough money for me and my son. Second I feel my dream of having a family or at least a significant other into my retirement yrs seems to be done. I'm 51 ,I lost alot of money in the divorce and the year off from work. My heart is crushed . I need therapy big time but since I dont have a job I cant afford it. Part of me is pushing real hard to get moving. Get the job and move forward with my son. The other part of me sees the worst case scenario. My wife was much younger than I . She was a beautiful person inside and out. My standards for who I would like to spend alot of time has changed with her. She somehow gave me peace ,something I never had in my life plus I thought she was the most beautiful woman in the world. SO the bottom line I'm broke and broken hearted. I have no anger just confusion.
I still have goals in life but I feel its too late to have the same goals. SO is this and obstacle or a challenge ?
At times I feel this is a great challenge. I know in the past things have always gotten better. I never would quit trying . AT times I feel this is a boulder that I cant move or walk around. I feel stuck and sliding down hill. Today i feel this is a challenge to accept and succeed but the nights are tough . I have dreams every night about my ex wife. They are never good . These dreams put me into a depression that I cant just brush off. SO if u have any words of wisdom ,or anything. I would enjoy reading it. Thanks for your help.
Joe