Respect your soul: don't keep repeating "I'm going to make it". Your soul already knows that, what it needs is to use the long journey to be able to grow, stretch along the horizon, touch the sky. An obsession does not help you at all to reach your objective, and even ends up taking the pleasure out of the climb. But pay attention: also, don't keep saying "it's harder than I thought", because that will make you lose your inner strength.
In the first place, you shouldn't believe in promises. The world is full of them: the promises of riches, of eternal salvation, of infinite love. Some people think they can promise anything, others accept whatever seems to guarantee better days ahead, as, I suspect is your case. Those who make promises they don't keep end up powerless and frustrated, and exactly the fate awaits those who believe promises.
If you're asking me if I like your company, the answer is yes. If, on the other hand, you're asking me if I could live without you, the answer is also yes.
A flower is not better when it blooms than when it is merely a bud; at each stage it is the same thing — a flower in the process of expressing its potential.