It's always a new week, a new day. If your feeling deflated and having thoughts on whether you should even continue doing what you're doing, then chin up buttercup! Think about that person or people that are in the same field that inspire you! I'm sure you have at least one person you look up to or strive to be as good as. If not, start thinking about it and keep it in mind. I'm pretty sure they also experienced the same struggles and have been where you are.
Sending you tons of love and blessings!