What if the gap between the goal and reality is too big?

The gap between my goal and reality is basically equivalent to the distance from Turpan basin to the top of Himalayan mountain, that is, the gap of 10000 meters or more, but I still don't think it is impossible to reach the top. What remains unchanged is that I believe I only need to take one step at a time, even if I walk ten meters a day. As long as I keep walking for 1000 days, I can still climb to the top of the Himalayas from Turpan Basin. Maybe there is a big gap between your goal and your reality, which makes you feel disheartened, but please remember that you can be disappointed, but you can't despair. You can be dissatisfied with your present life, but you can't choose not to struggle and choose the short-term comfort now.