‘In a hundred years who is going to give a damn?’
is Step 1.
However, that does not mean you should not give a crap about anything, because it is exactly that attitude that is at the root of much of the ‘evil’ behaviour of people(and business/politics etc) that are doing all the crap you find so despicable.
I think you have to get a philosophical perspective on the human condition. Life in our modern age is the fight to ensure the human race can survive to reach it’s full potential. It’s the good side of the force against the dark etc.
On one side of that fight is the pure selfish, often greed led, non-empathic personality, that often falls fully to the dark side (evil), which leads to all the real nasty stuff we here about all the time, from nations waging illegal wars for company profits to small scale nasty people of ‘Mr Burns’ type.
On the other are those that see this behavior is dragging us to destruction, the environmental changes we are currently going through is one example of that danger, the ramping up of intolerance and violent rhetoric in our media with the aim to create consensus to allow more evil action by our company backed governments another, etc etc.
So as always the ‘fight’ is ongoing. As one of our centuries famous men once said, all it takes for evil to triumph is for the good man to do nothing. Or words to that effect.
One thing i have noticed, is that in the face of the recent strong push of the right within many of our societies (as this is often behind the longer term self-destruction push), i have seen a growing awareness of their ‘gameplan’ amongst normal non political people, often students and young people, so i see the future being more positive than we have had over recent decades.
People are more connected, and growing more aware on a number of the issues around all this due to being able to have discussion like this, so in short don’t worry too much, just do what you can to help the ‘good men’ ensure a brighter future. It’s the same as it has always been through much of history.