It's a good letter (I gave a copy to my W). The trick is that *you* have to truly believe this in your heart, otherwise it won't come out sincerely.
In my case, I typed it up in January and gave it to W in April. I *knew* in my heart at that point. W liked it but said she didn't believe I meant it.
Here's one suggestion: write it out, then tell yourself to wait until tomorrow to give it to your W. The next day, ask yourself if it can wait until the next day. Repeat until you *know* that today is the day.
Hope this helps.
Me 43 W 38 M 5 T 7 SD20 S15, S13 with 1st W ILYBNILWY June 2010 Separation/Bomb July 2010 Divorce Feb 8, 2011