Definable from its root word and suffix; Quantum(or quantity) and "mistic" (to be of or express the idea (or notion that) your are of the root word by ether emotional expression or by a externally perceivable action on yourself, to others or to your environment)

Meaning 1a;

To obsess or over concern yourself over quantity or volume.

Meaning 1b;

To be ether negative or positive may it be emotionally or illogically over a quantity or volume.

Meaning 2a;

To overly concern over the quantum nature of reality (to tie ones self in a emotional knot or become in a state of emotional distress from a blurred understanding of reality.)

Meaning 2b;

To over annualized the quantum nature of reality until it becomes obscure.

When you eat dirt for the first time and leave your family to build a shack in the woods