Types of times

Sometimes I live a lifetime in an instant. We've all experienced that.
Other times, a short time becomes an eternity - or close to it.

Having fun makes time go by quickly. Time can shrink.
Being bored makes time go slowdown to a crawl. Time expands.

Dreams are complicated, long convoluted ones can last only seconds.
A revelation, an AHH! moment is instantaneous. What is an instant?

How long does an instant last, asked the young lady to the poet.
He answered, all my life with you will be an instant.
Love and you'll live forever because it fills all the crevices of time.

So, is an instant the same as eternity, or the experience to jump into a wagon that takes us into a place without time?

Times

Time is a big problem, when you think of it.

Some thoughts:
There seems to be at least two types of time. One type is an instant. An instant has value, not duration. It is a discrete something.

How long is an instant? How long does an instant last? These are wrong questions. An instant doesn't have duration. In fact, duration is the second form of time.

An instant is the capturing of a state, and duration refers to a continuous sequence.
Both live in the mind, in memory.
Is time cyclical, or linear?

Some people (like me) think we can travel back in time...

Dimensions of time

What dimensions could be assigned to time?
Is time a form of energy, a form of matter?
Where does it come from?
Where does it go?
Is time static, dynamic?