I have found this video from Steve Jobs CEO of Apple and Pixar Animation (at that time) to be of most help when I feel things are not going as planned.
Most likely you have already seen it but if you have not, here it is. I Personally enjoy the various messages he shares…
Follow your heart, don’t loose faith, find what you love, do what you believe is great work, don’t settle, keep looking.
Thank you Stanford University