When you want to climb up a staircase, what do you do? Do you stand below, count all the steps there are, calculate how many minutes it will take you, and murmur on how difficult it may likely be?
I suppose that after knowing you need to get upstairs, you just get to the staircase and climb. Well, if also you really mean to get to the top in life, stop counting and recounting the steps, discussing it, highlighting potential challenges, and listening to cowards discourage you; and start climbing.
One step after another, you’ll get to the top without knowing you have arrived. Then you’ll realise you made it; you’ll quickly forget your struggles, and tell yourself it wasn’t really that difficult anyway.