"'What is your formula for overcoming large obstacles?"

Obstacles will be large or small depending conversely on whether the person they confront is large or small. Most obstacles will disappear once we make up our mind to plow right through them. You can't fall a six inch tree with one lick of the axe. Sharpen the axe and in five or six well placed licks, down goes the tree. Sharpen your wits., strike not once, but as often as is needed, and away with the obstacles.