Oh heck I'll write it for you....

(said in a completely non-serious, tongue in cheek manner)

But really, good for you for talking to your therapist first.....

And yes, you would have to write it in a casual "hey-just-wondering-how-you-are/what's going-on-with-your-life/I-was-thinking-about-you/what's-up/I-have-a-great-life-but-occasionally-think-of-you" kind of way.

Plus, don't forget that your memory may be holding on ONLY to the good parts....

Good luck and keep us updated.....