Everyone has hard times. Everyone goes through unpleasant sometimes devastating situations. My whole life I've been taught to downplay my own feelings during these times because someone else always has it worse. And that's true. But just because someone else has it worse, doesn't mean that I can't have a bad day too. The more you brush off your pain, the less you allow yourself to process that pain, the more it builds up and the worse off you are long term.
Now there is absolutely something to be said for having perspective and realizing where your problems are on the grand scale of life but its more than ok to take a moment to be sad, hurt, mad, or struggle with what you're going through too.
I hear a lot of people who have been raised on the same philosophy. When they tell me about something hard going on in their life, they often qualify it with "I know I'm lucky and don't have a right to complain." and that's part of the problem. You do have a right to complain. You're not disqualifying the hardships of others simply because you need to talk about something you're going through.
I've learned that because I spent so many years not feeling the hard things in my life, I'm not as equipped to deal with them in the most successful way. I ignore problems until they get overwhelming. I push feelings down until they become unmanageable. I refuse to talk about things until I'm at my breaking point. And had I taken the time to check in with myself when these situations occur, they would probably be a lot smaller issues and be easy to overcome.
The point is - life is hard. We all go through things. Some are harder some are easier. Some of us deal with things better than others. But just because someone else is going through something worse does not mean you cannot feel pain. Keep perspective but absolutely talk and feel whatever you're feeling so that you can more quickly and successfully move on from the negative situation and back into your sparkliest life.