If I have some kind of incentive to look forward to, it motivates me to work hard even if my job is something I don't like.
この場合、次のような言い方ができますよ。
ーIf I have some kind of incentive to look forward to, it motivates me to work hard even if my job is something I don't like.
「楽しみなご褒美があれば、嫌いな仕事でも頑張ろうと言う気になれる」
If I have some kind of incentive... を使って言うことができますよ。
ご参考まで!