and the universe is vast. Conceptualising either is very tricky for the human brain because both are outside comfortable processing range for us. We get the same problem on a daily basis with tasks such as 'get fit'; 'create strategic plan'; 'improve productivity'; 'change career path'. Such tasks are impenetrable at their current size: they are both brain and time unfriendly. To make progress with such tasks they need breaking down into small chunks: about 45 minutes in length will do nicely. Break them down and if necessary break them down again.
Much time management and getting things done is not about time: it's about scale.