Delta tells you how much an option’s price moves when the underlying stock moves $1. So if you have a call with 0.5 delta and the stock goes up $1, your option gains about $0.50.
What matters is that delta changes as the stock price moves and time passes. Calls near the money have deltas around 0.5, while deep in-the-money calls get closer to 1.0. This helps you pick the right strike based on how much movement you expect.
For consistency, match your delta choice to your market outlook. Higher delta options move more with the stock but cost more upfront. Lower delta options are cheaper but need bigger moves to profit.
Think of delta as your profit multiplier when the stock moves in your favor. Higher delta options follow the stock price more closely but they drain your account faster when wrong.
The tricky part is delta keeps changing as the stock moves and expiration gets closer. Options that start at 0.3 delta can jump to 0.8 if the stock moves your way.
For better consistency, try tracking how much delta you need based on how far you think the stock will move. Small moves need higher delta to be profitable.