persevere in

persevere in (something)

To continue trying to improve at or succeed in doing something. Your writing isn't going to be amazing when you first start—you have to persevere in it. Even though I struggled at times, I persevered in my studies and ended up graduating with a 3.5 GPA.
See also: persevere
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

persevere in something

to persist in [doing] something. I will persevere in my efforts to win election. Kelly persevered in her studies and graduated with honors.
See also: persevere
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
Nevertheless, religious gay people persevere in trying to win changes from their denominations," wrote reporter Scott P.
Inspiring moment in PW: "As you persevere in your prayer-walks, you will build up memories of how the landscape--and you--change over time.