What is difference between...

Selling Disciplines of: Up-From Cost Sell Discipline and Target Price Sell Discipline. They sound like the same thing.

Not the same thing. The big fundamental difference. I buy a stock for $10. I have a target price of $15 on it, so i don’t sell until it nears or hits $15. However, some have an up from target and they set it in percentage terms. Maybe its 10%, 20%, 30%. In my previous example, if the up from target was 50% then these two methods would indeed be the same thing. But they are not interchangeable.