Focus! However, don’t put all your eggs in one basket. Diversify, but don’t spread yourself (too) thin. One by one, valuable pieces of advice, yet, combining them makes them somewhat contradictory.
Moderation in all things is certainly one of the keys to success in life. The issue is that the same effort today could feel like you’re spreading yourself way too thin tomorrow, perhaps due to lack of sleep.
Due to the variability, it’s nearly impossible to determine a proper balance between focus and diversification in business activities.
All your eggs in one basket is a risky enterprise. Half an egg per basket is obviously impractical from a logistical point of view. If one egg per basket is the bare minimum, the question begs itself: how many baskets can you carry?