I think it's ok to be at the bus stop for as long as it takes. You've got to get the right bus at the right time that takes YOU home.
I was watching The Bridge documentary yesterday (thank you @TheCrow and @Mrs.O'Leary'sCow for the recommendation) and it was really interesting. Just to see really that some people struggle all their lives with mental ill-health and for some it comes out of the blue.
Some seem to make several attempts and some visited the bridge a few times, others just turn up and go straight away. It just shows that there's no time scale, no right or wrong way. I think sometimes we have fractionally 'better' days or moments and they carry us through that bit longer. Then we turn around and think why on earth am I still here.