We can’t go back to live in the past. Because we might have once felt more secure in the past is no reason to wish to go back to that point. Focus to go forward in discovering a sense of security by living fully in the present.
Bring along what you have learned in your past experiences, but don’t aim to go backwards to get there.
The world keeps moving, apply what you have learned from it.
“Never look back unless you are planning to go that way.” — Henry David Thoreau —