“Go with the flow” is an invitation to jump in.
That doesn't mean the flow will be enjoyable–often it's not. However, the invitation is always there.
It's momentum, and momentum seems to have direction in time and space, but this only appears so through linear analysis.
Momentum is everywhere and always present, even when things seem quiet, slow, even dead still. Momentum has you even when you fail to notice.
There's nothing you can do about it even though you think you are in control, especially when you think you are not. It is the nature of things and it both helps and hinders at the same time.
Always at the same time.
But just like a visual illusion where you see either the old woman or the young woman and never both at once, support and stimulation exist together in momentum.
When it makes you smile, go with it.
When it makes you cry, don't fight it.
Never fight it, be it good or bad. Good or bad are your labels, not momentum's.
It just is.
So which one do you perceive?