Came across this quote recently. And it resonated with me.
Until one is committed, there is hesitancy, the chance to draw back, always ineffectiveness. Concerning all acts of initiative (and creation), there is one elementary truth the ignorance of which kills countless ideas and splendid plans: that the moment one definitely commits oneself, then providence moves too.
- W. H. Murray, from The Scottish Himalayan Expedition (1951)