Yes, whenwilitend, outright lies is certainly a no-no. Another thing is to 'stretch' the truth. If I work on project basis half-day week for months, that's certainly not much. But I can simply put on the CV: from month x to month y, worked on projects in my field.

Anyway, getting a job when the mental issues start to improve is an important step in healing, but mental health professional are not always able to help here.