Invest more development effort in your strengths than in your weaknesses

Move from average to excellent in your strength areas rather than from poor to average in your weak ones.

Why it works

The conventional wisdom — develop your weaknesses — has a ceiling problem: going from poor to average in a weakness returns less per unit of effort than going from strong to exceptional in a strength. This is not because weaknesses don’t matter, but because the marginal return on talent investment is higher where talent already exists. The brain’s neural efficiency in areas of natural strength accelerates skill acquisition.

How to do it

1. Identify your top three strengths and find one specific way to develop each further in the next quarter.
2. For genuine weaknesses that cannot be delegated, develop a management strategy (systems, checklists, partners) rather than trying to become strong in them.
3. Track where your development investment is actually going — most people spend more time on weaknesses than the return justifies.
4. Distinguish "weakness" from "threshold skill" — some skills require minimum threshold performance; others can be delegated.

Evidence

Expertise research (Ericsson) finds that skill acquisition is significantly faster in domains where underlying talent exists. Gallup’s strengths research is the applied business version of this finding. (observational)

The "invest in strengths" principle is compelling but context-dependent: it applies most clearly to discretionary development investment. It does not imply ignoring genuine capability gaps that are performance blockers.

Sources

• Ericsson & Charness (1994), expert performance: its structure and acquisition, American Psychologist

Common mistake

Using the "invest in strengths" principle to avoid difficult but necessary development — the principle is about allocating marginal effort, not about ignoring genuine capability gaps.