"Never give up on a dream just because of the time it will take."
"Never give up on a dream just because of the time it will take to accomplish it. The time will pass anyway." - Earl Nightingale
Tasks can seem overly daunting when we look at how much time they'll take to complete, but what good is that time if we're not using it for something that matters to us? You'll use it to do something, so why not use it to achieve what you truly care about?
Many times this will be easier said than done, of course, as time and effort aren't the same thing. You will need to consider how you'll actually achieve a dream rather than just find the time. That said, don't deny yourself the opportunity to try because the commitment seems significant. Plan it out, break down the steps, and go from there. You may not have to give up or postpone what you want to do. If you give yourself the opportunity to try, you'll often find possibility.