There is no one without any trials or tribulations, and what's important is how you deal with those challenges. First, don't compare your worries with those of another--we all have them, and they can't be quantified. What is very challenging for one may not challenge another, yet always remind yourself that there is no one without struggle.
It's important go get help when you need it, and it's also important not to be the victim. See your challenges for what they are--your strife, and deal with it in a step-by-step manner.
As you deal with your struggles, remain empathetic to the struggles of those around you, and take a step-by-step approach to improving your situation. Most struggles can be remedied in some ways, and it's important to read up, seek consult, and find ways to remedy your situation. There may be struggles that don't disappear, but it's likely that you can lessen the burden in significant ways.
Once you stop judging the struggles of others, and focusin on the good lifework you can do, you will find a new sense of freedom that will truly help you live the life you desire.