I like the NLP concept of Toward or Away:
You want more money because you want to go away from being poor? Then you have the vibration of poverty in it. That’s low vibration.
You want more money because you want to enjoy your life even more and you already appreciate the money you have in your life? That’s high vibration.
You want a nice car to impress other people = low vibration. You want a nice car because you love cars = high vibration.
You want many women to heal your broken heart and ego and to be more confident = low vibration. You want many women because you love and appreciate women and give them all the love thats inside you = high vibration.
From the outside these goals are identical. But the intention can be totally different.
What helped me a lot with that Abundance Mindset and High Vibrations and understanding vibrations in general are the Abraham-Hicks videos on youtube and also the book of Esther and Jerry Hicks (Law of Attraction). This book is the secret behind the famous film “The Secret”.