A person can know they made the right choice and still miss the part they left behind.

Correct decisions produce losses too. Choosing one road means the other is genuinely gone, and missing it is not doubt, or ingratitude, or a sign that you should go back and check your reasoning. Two things hold at the same time: this was right, and something real went with it.

If you are missing a place, a job, or a version of your life you chose to leave, let the missing exist without letting it reopen the decision. Say what you miss specifically. Vague sadness lasts longer than named sadness.