Countless "gurus" have said it, and yet you still ignore it.
What we focus on expands.
If you focus on lack, you are going to get more lack.
Do you truly want abundance?
If that is the case, then you need to focus on abundance.
When you focus on abundance, your actions will start to reflect activities that will create more abundance.
If you focus on lack, you will get distracted and focus on non-income producing activities. Activities that won't add value to others or bring more abundance to your life.