Mia, Aging is because of the stress from the depression in MLC. You will see all kinds of changes in him as he progresses through his crisis. What you are seeing is very typical and I certainly wouldn't change my looks unless I wanted to do so for myself.
Keep the focus on you and your children.
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.