<human>: My fiance has been suffering from depression, concerned about his career and where his life is going etc.  Everyone hits that marker at some point.  His self esteem is crap, he expresses that he doesn't know why I love him at all.  (he's an amazing man, just a little lost these days)  I'll take suggestions to help build his esteem!!

There's been an ongoing trigger of mind numbing stress between us that over the course of our relationship has never affected us so turbulently until now while he's imagining the rest of his life with me.  (heartbreak)

When we have conversations and I get nervous about his reactions or fumble with what I'm talking about I get quiet.  If he raises his voice in frustration I have a tendency to go mute with insecurity.  He is severely offended by my silence.  I've fought diligently to try and speak up, but I get really unfocused very quickly and pretty emotional, I'm sure he's seen enough of my tears.  His advise to me these days is get some balls.

How do I break through my conversation catastrophes?? How can I change my thinking from being intimidated and hurt by his words to having confidence?  I want to change things around so I am comfortable all the time despite his negative outlook on life right now.

Can you summarize the given text in a few sentences?
<bot>: How do I overcome freezing up during a conversation?  Especially the important ones?  I go silent when I get nervous and it REALLY offends my fiance.  Can I change?