I feel that if you work hard and persevere, you will be rewarded.
per·se·vere
[ˌpərsəˈvir]
verb
persevere (verb) · perseveres (third person present) · persevered (past tense) · persevered (past participle) · persevering (present participle)
- continue in a course of action even in the face of difficulty or with little or no prospect of success:
"his family persevered with his treatment"