by using optimistic language instead of negative language this helps them to also have a positive outlook on life and can make it easier for them to get over challenges.
by sending them messages via email or chats to tell them that you are here for them and will be ready to their problems.
by getting down on the same level with them and understanding their pressure and talking it out with them and also by telling them stories about yourself or some else and how they got through it. Make yourself equal to them but don't tell them their tiredness is invalid and because you have a degree/masters makes you better than them. Get a personal relation with where everyone around can be comfortable and it is pratical.