Ganbaru (頑張る): to keep at something with steady, patient effort, especially in a hard time. Ganbatte (頑張って): keep at it. Ganbarimasu (頑張ります): I will keep at it.
In 2020, the psychiatrist and industrial physician Inoue Tomosuke wrote in President Woman Online that it has become widely known that encouraging a patient with depression with Ganbatte ne is considered wrong.