you should always have short AND long term goals... and both should always be updated. My original long term goal was 5k and short term was 100. If I didnt aspire for 5k my channel would be as big as it is now. So I dont think theres anything wrong with thinking big. The moment you think that dreaming big will lead to failure, you have already failed.I should also probably add that everyone should know that if you keep focusing on what you want in the long term instead of short term focused goals, you're probably going to end up with a hell of a lot of disappointment and frustration.