I am so happy to read that you've bought your tickets to travel alone with the kids this summer! You are going moving forward and will be enjoying yourself along the way.
Your h is doing the typical MLC stuff, i.e., avoiding family. Don't let it bring you done...it's his loss.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.