Sometimes enough is not a number; it is the ability to recognize fullness.

If enough is a number, you will pass it without noticing, because the number moves as soon as you approach it. Enough is really a capacity, the ability to look at a situation and register that it is full. People who lack that capacity are not short of anything except the recognition.

Practise on something small where you already have plenty. Notice fullness deliberately, in a meal, an evening, a week. The skill transfers, and it is the only version of enough that anything can actually satisfy.