Time is not separate from you, and as you are present, time does not go away. – Either Dogen
Time has no objective reality.
There is only movement in sequence.
Time requires a past and a future, both of which exist only in the mind and memory.
The present moment is the only true reality. It is always now, and never not now. Therefore, only now exists.
When you wallow in regrets from the past or are paralyzed with a anxiety about the future, remember that time is not real.
What is time then? Time is the measure of sequence, of the speed between two events.
This measurement is possible only because of memory which remembers past events, and consciousness which observes present events.