Well, I can accept that he cracked. Maybe I'm being too tough on the guy, I just kind of assumed that he had dealt more fully with these issues in First Contact and later in Resistance, Before Dishonor, Greater Than the Sum and the 1st two Destiny books.
I still would have liked to have seen him take a slightly more proactive role in what was going on, but it isn't a huge deal.
I am happy that this dark period of Picard's life seems to be over though.
I think what we get with Picard is a man who has just been pushed and pushed and pushed, and now that he's actually trying to move on with his life in a big way all hell rains down on not only him but the whole of everything he's worked for.
Picard's issue, even in the series, has been his tendency to internalize a lot of what's going on with him and his life. And eventually there's not room left, there's nothing left to do but say "I'm done, I can't do it anymore".