There is one nonfiction book going along those lines, and that is Peikoff's Objectivism: The Philosophy of Ayn Rand. The Dedication of the book, which is to his daughter, speaks only of his hope that the philosophy set out in the book will guide her life. He deliberately pushes comparisons with other philosophies to definite margins, and these are few and small. This contrasts markedly with his other two books The Ominous Parallels and The DIM Hypothesis. I enjoy all these and the various things they address, but the focus on the positive in OPAR is a nice thing to enjoy of it.
One nice thing for me in presentations concerning Objectivism was that after the split between Rand and Branden, the castings and recastings of people in the world into deep dark and light psychological types and mixtures of such types dwindled and disappeared. There was little to nothing of that negativity (and beyond-the-pale speculation) in writings of Peikoff, Gotthelf, or Kelley---good for them.
Barbara Branden once remarked in an online post that she found OPAR dry. Similarly, Nathaniel Branden, in a video interview made pretty late in his life, said yes, he thought the book a good representation of Objectivism, but too dry. I mentioned to Barbara in that thread that I didn’t find it dry at all. It is captivating to me. But there are different degrees of the personal in which a philosophy book can be written. Descartes’ Meditations is probably the tops on that, it captivates the novice to philosophy today as ever.*