Jim Rohn was fond of saying that
Build a house on rock not sand. When the storms come, which they surely will, the house built on foundations of sand will fall down, while the house built on rock will stand.
Or words to that effect.
My question is, if you are not a geologist or a surveyor, how do you know whether you are building on sand or rock?
The best I can manage in understanding this analogy is that in life firm foundations are built on your strengths and interests. Building a career or definite purpose on weaknesses is like building a house on sand.
In life it is never either sand or rocks but a mixture of both, and you need the cement of friendships and colleagues, a mentor or coach to hold it all together.
That’s the most sense I can make of what the indomitable Mr Rohn was trying to say.