Be VERY CAREFUL concerning the purchase or promotion of books authored by persons who are not widely known or deemed to be in variation to Scripture, within the larger community of Christianity.
DO YOUR RESEARCH !
It the contents do NOT 'Tally' or seem to contradict basic Scripture, leave well alone !
Satan will use ANY means of deceiving God's Children.
I could be specific but will resist the temptation. Here is a most interesting video.
Also read an eye-opening review of the book 'Jesus Calling' authored by Sarah Young
It's at https://www.redeemer.com/redeemer-report/article/jesus_calling_by_sarah_young_a_review