All of us go through mainly 3 stages of life, Young, Middle Age, and Old. The below is the conceptual view in terms of Time, Energy and Money in the above 3 stages.
Young: You got time and energy to enjoy but you
don't have money as you are not yet
financially stable.
Middle Age: You got money and energy
but you don't have time as you
are working off most of your time.
Old: You got money and time but you no
longer have the energy to run around
and enjoy yourself fully like what you
can in the previous 2 stages.