From due diligence, you can know intuitively what sectors work best.

Companies are wasting millions of dollars generating bad leads that no one follows up on.

...but since He gave it them for their benefit and the greatest conveniences of life they were capable to draw form it, it cannot be supposed He meant it should always remain common and uncultivated. He gave it to the use of the industrious and rational (and labour was to be his title to it)...

Gardens are not made by singing 'Oh, how beautiful!' and sitting in the shade.

It is not who will eat beans, but who will pick it that is scarce.

The father of every good work is discontent, and its mother is diligence