There isn’t a clearly defined book, article, or “pages he writes” source that is widely known under the exact phrase “pages he writes where energy lost,” so the best match in current public content points to discussions about where “lost energy” goes in physics and, separately, to posts about “energy leaks” in a personal or emotional sense.

What the phrase most likely refers to

Given what is trending recently, there are two plausible interpretations:

  1. Physics / thermodynamics angle
    • People often ask online “where does lost energy/heat go?” when reading or quoting popular science explanations of conservation of energy.
 * In those contexts, the writer explains that energy is not truly “lost,” it is usually dissipated as low‑grade heat, spread out into the environment where it can’t easily be used to do work.

 * Readers sometimes describe these explanations as “pages and pages he writes about where the energy is lost,” which may be the kind of phrasing you’re echoing.
  1. Self‑help / “energy leaks” angle
    • There are also recent Substack‑style posts about “identifying where energy leaks are dulling your radiance,” which use “energy” metaphorically for attention, time, and emotional bandwidth.
 * Those writers focus on how your “energy” is lost through over‑commitment, unhealed patterns, or draining relationships, and how to notice and close those “leaks.”

If you meant a specific author (for example, a particular physicist, self‑help writer, or forum poster), the phrasing you used doesn’t uniquely identify them in current public material.

Quick explanation: where “lost energy” goes (physics)

In actual physics writing about “where the energy goes,” a typical explanation looks like this:

  • Energy is conserved; it changes form (kinetic, potential, thermal, etc.) but does not vanish.
  • When you see “lost” energy in a problem (like friction slowing an object), it almost always becomes heat, slightly warming the object and surroundings.
  • That heat then disperses into the environment, becoming so spread out that it is no longer practically useful, even though the total energy is the same.

A textbook chapter or set of “pages” on this topic will often walk through many examples—pendulums, cars braking, mixing hot and cold water—to show that “loss” really means “conversion plus dispersion.”

Quick explanation: where “lost energy” goes (life / emotional)

In the self‑development / spiritual writing that talks about “energy leaks,” the message is different but uses similar language:

  • Your “energy” is your focus, emotional capacity, and physical vitality.
  • You “lose” energy by overextending yourself, saying yes when you mean no, staying in draining situations, or constantly doom‑scrolling and comparing yourself to others.
  • The pages are often practical prompts: track what activities leave you feeling heavy or resentful, then reduce or restructure those so your energy isn’t constantly leaking away.

A recent example frames it as realizing “I’m my own problem” and then doing the work to plug those leaks so your “radiance” comes back.

If you were thinking of a specific book or writer, tell me any extra detail you have (author name, topic—physics, self‑help, spirituality, etc., or a quote you remember), and I can try to pinpoint the exact “pages he writes where energy [is] lost” you have in mind.