I’m glad I didn’t feel at all like you. My job was not my identity and I was happy to retire. It was not as interesting and fulfilling as yours. But I still lost. My husband and I got divorced over alcohol and he broke off from me and the kids. The kids started to fight amongst them so my family is completely fractured. I rarely see them and I miss my ex so much. If it’s not your job it could be your marriage or any other thing in life that has defined you. Life and its blessings are not guaranteed. I think you’ll do great. You have so much in you to keep exploring and stay busy with your mind.