As we become more familiar with living as/from ourselves as space & awareness, it becomes more clear how there is only this present, this always changing always new and fresh now.
Past and future are only present as thoughts, as memories and abstractions. And even being caught up in thoughts about the present filters it through an abstractions.
Coming to ourselves as space & awareness, we can allow thoughts to arise along with all other experiences in the present. We realize there is only this present, always new and fresh, never manifesting the same way again.
There is only Now – I may as well appreciate it.