We all need encouragement. I came across these quotes recently.
"Do what you can, with what you have, where you are."
"Believe you can and you're halfway there."
"It is hard to fail, but it is worse never to have tried to succeed."
"The only man who never makes mistakes is the man who never does anything."
These are very wise but the best words come from Bible. Do not be anxious about anything, but in everything by prayer and supplication with thanksgiving let your requests be made known to God. And the peace of God, which surpasses all understanding, will guard your hearts and your minds in Christ Jesus. - Philippians 4:6-7
Take the promises of God to encourage and give you peace. Focus on success in God's eyes not the world's. You will put a smile on His face and will be able to sleep better at night.