Build them up
Times of personal difficulty, especially ones involving rejection, can bring people down and make them doubt themselves and their abilities.
If you notice someone you care for seems to be a little low, harder on themselves than usual, or going through some self-doubt, a sincere compliment or two can go a long way toward improving their outlook.
When offering compliments, you’ll want to keep a few things in mind:
- Keep them relevant to the current situation. For example, you might remind a friend who’s upset about a mistake at work about their usual pattern of success.
- Choose compliments that highlight specific strengths over empty compliments that might apply to anyone. Instead of simply saying “You’re so thoughtful,” pinpoint what makes them thoughtful and share your appreciation for that skill.
- Don’t gush. A well-placed compliment can make someone feel great. Overdoing it can make people skeptical of the compliments, or even a little uncomfortable (even when you do really mean them).
https://www.healthline.com/health/mental-health/emotional-support#positivity
~Nikki
Nikki's Confetti Life 
The picture looks so pretty.
As for the subject, I find that sometimes more praise only highlights depression. People will get better, but telling them that will not help. A hug works so much better.