* You are so dumb that the problem ruining your life is one I can solve in five words.
* It's as easy as five words; obviously you are not trying.
It can sound worse to someone suffering from a (unfairly, ignorantly) stigmatized illness such as depression.
Also, consider that probably the other person likely has been dealing with this problem for awhile. The simplistic solution that comes to mind in 30 seconds probably is one they also considered in the first 30 seconds, and probably they are well beyond it at this point.
But sometimes these healthy habits aren't going to be enough.
It took me years to realize but drinking alcohol makes me sad and anxious for a a couple of days. The more I drink the worse the mood on the next day.