Thing's don't always go the way we think or turn out as we expected.
This is why we must be adaptable.
You must often look beyond what you expected to see the end goal.
I did a huge remodel in Brentwood. As I recall, we added 2600 feet and a three car garage. (This was the job I severed my foot on.)
There was one location in the middle of the house the weight of all the roofs converged. This weight was to be distributed by a post line from the roof to a new concrete pad 18 inches deep, and 3 feet square below the floor.
When we got to forming this pad, we discovered the ground was not solid. We contacted the engineer and he said we had to go down until we hit solid ground.
The area beneath the proposed pad grew to 4 feet square and 10 feet deep. We had two guys at the bottom with camp shovels digging and filling 5 gallon buckets and workers up top raising the buckets on ropes. As the hole grew deeper, safety rules required we shore the earthen walls with plywood and bracing.
After we reached solid ground, (10 feet below grade,) a huge custom rebar cage had to be fabricated and the hole required an entire concrete truck to fill.
You may not run into such a massive problem when you quit
Emotions are going to be your biggest unknown.
Be Aware. Be Prepared!