I totally agree with you, honestly.
A guy suggested me this book "The Power Of Now" but I'm always skeptic with gurus and people who are seen as 'enlightened' when , at the end of day, they just re-propose the concepts of Buddhism in different ways.
At the same time, I think I can find some good inputs on this book, analyze them and make up my own mind
Seemingly his main sources were Buddha, Jesus, or perhaps Jiddu Krishnamurti.
power of now is very similar to mindfulness..