Our friend Webster offers this:
"survive vt ... 2 to continue to live after or in spite of [to survive a wreck]"
"surprise n ... 4 something that surprises because unexpected, unusual, etc."
Face it, life is full of surprises. Some good, some not so good. The singular event of retirement, the transition to not working for money does not change that fact.
Think about things that surprised you over your decades of life. Many times the surprise is just in that you hadn't been paying attention while something arose, grew, or eroded. Big changes are sometimes planned, and sometimes the surprise isn't that something happened but WHEN it happened.
Illness can surprise you. A loved one having a need can surprise you. And your own behavior can surprise you... "I signed up for WHAT?" "I can't believe I fell off the wagon."
It's not a question of "if" for many of us, just "when". I was surprised by the passing of my mom's friend last week. I was surprised that my restart of healthy habits unraveled after a week or so. I was surprised at my reaction to news stories. Etc., etc., etc.
And sometimes surprises can throw us off our stride... we can withdraw or flee while our minds spin and eventually resolve them. But the important thing is that MOST of the time, these surprises don't kill us... we survive! We live on.
And if that surprise *did* throw us of the stride of our healthy habits for a while, survival means picking ourselves up, dusting ourselves off, and resuming that stride. Which might be the best surprise of all... proof that we HAVE transformed into a healthy "normal".