Everyone is different, and everyone resonates different with a specific book, person etc. Allow them to just be.
I think the Eckhart Tolle books are just a stepping stone for people who resonates and allows them to raise their own awareness one notch up. As well for me Abraham teachings are just a stepping stone. As well for others the Wayne Dyer books are a stepping stone as well. Likewise for 'Conversations with God' series by Neale Walsh. The list goes on.
Allow them to just be. Learn to allow than to tolerate. Read from the book "The Law Of Attraction" by Esther and Jerry Hicks the pages 126 and 127 and the next pages about allowing and tolerance.