In 1926, Erwin Schrödinger introduced the equation that became the dynamical law of non-relativistic quantum mechanics:
iℏ ∂ψ/∂t = [−ℏ²/(2m)∇² + V]ψ
It does not describe a particle following one definite path. It describes how the wavefunction evolves and therefore how the probabilities of possible experimental outcomes change with time.
The mind follows what you repeatedly feed it. Guard your attention like it matters, because it does.
Your life rarely moves beyond the direction of your thoughts.