I guess the thing is that what "breaks the pattern" of fear, denial, guilt, shame, depression, doubt, etc, is different for everyone.
For some it is getting so bad that they are literally moments from taking their own life and realising that they can't go on the way they have been but they don't want to die either. For others, like me, it is a meltdown moment that is the straw that breaks the camel's back - years of denial and refusal to accept or do anything about being trans just comes crashing down over some seemingly insignificant issue... and again, a realisation that it can't go on this way. Or the people who have found themselves boxed in by addiction or other pursuits, who find themselves up against the wall... realising that it can't go on this way.
That is the breaking point, where you just can't go forward and can't go back without dealing with the issue.
Dealing with the issue, by the way, doesn't mean that you have to transition or take HRT or do anything, but dealing with the issue means admitting to yourself that you are trans, or that your gender identity doesn't seem to add up, and trying to figure out how to work with that.