There are some days where, despite everything being amazing, events will stack up and send you over the edge. Today (or rather yesterday since it is 2:40 am here) was one of those days.
All you can do is hope for the best and plan for the worst... All the while trying not to let your planning get in the way of your living your life and remaining positive in your knowledge that things will all work out in some way (even if it isn't the way you anticipated them). There is always tomorrow (cue 2 different songs from my childhood).
It is a difficult balance to strike. But we all must strike it in our own way, somehow, in order to survive.
One day at a time. Moment by moment.