What are ways we can help Earth?
Look for cooperative ways of creating what calls to you.
Be conscious of all that we do. Be aware that everything effects everything else, and think in terms of creating harmonies with natural systems in all that we do.
Look beyond the dominant ideas of markets and competition, and see that both have a role, but that cooperation and human values offer the greatest value to all in the long term.
Accept all that is.
Do what we can to reduce our impact on the planet, eat as much fresh fruit and vegetables as possible and as little animal products as possible (preferably none).
The effect of this is three fold:
it is easy to feed the population of the planet on plant food (and I have been vegan for 3 years now), thus reducing the stress we place on the ecosystem; and
people are much healthier on a diet of fresh whole plant foods (with as few chemical additives as possible [preferably none]); and
reduced chemical inputs also leave the environment healthier.
Get past the concepts of markets and money. The pursuit of money is scarcity based, and must maintain scarcity for a significant fraction of humanity. We have the technical ability to create abundance and security for all of humanity, and the systems we have based around money and markets are the greatest impediment to delivering that to everyone on the planet.
Get to know your neighbours, and those around you. Ask them about what it is that most important to them, ask questions that let them see what they are doing now is working against their own values, and help them find ways of being that deliver what they value, while also assisting all life on earth.
It is not a trivial issue.
There are no single silver bullets.
And there are billions of things that we can each do, and the more of us that do them the greater the impact is.
It is a matter of awareness and choice and belief.
Believing that you can make a difference is always the first step in the process of making that difference.