One has to do nothing. There is nothing that anyone has to do. However, there may be some things that some will want to do. Everyone should work towards being peaceful and kind. If one seeks The Holy Spirit, then one does not have to worry about what to say or what do. A Course In Miracles (ACIM) states that one needs to do nothing.
The Holy Spirit is a wonderful guide! More humans should read A Course In Miracles. A Course In Miracles is a wonderful book. Reading this book can potentially bring one more happiness, joy and elation. Heaven is perhaps here and now. The Earth is in Heaven. Heaven is a state of mind. There is nothing that one must do. Humans are able to create Heaven on Earth. ACIM can help to bring once peace in life.
A Course In Miracles is a good book. Miracles can be quite wonderful. God would not send anyone to Hell. God is all-powerful and all good. Because of this, he would have the intention and the ability to ensure that no one would suffer eternally against their will. Certainly, God will ultimately ensure that justice occurs and that no error goes uncorrected.
There is nothing that anyone must do. A Course In Miracles is a great book. More individuals should read and study it. A Course In Miracles is a powerful book. There is nothing that anyone must do. God will provide everything, ultimately. There is nothing to worry about because everything is perfect and all humans who create peace are in Heaven.
This does not mean that anyone should neglect their own self or stop providing for their own needs. This is a statement of a higher spiritual truth. All humans should use common sense and critical thinking when deciding what to believe religiously, spiritually and theologically. All humans should take personal responsibility for their own situation. A Course In Miracles does not seem to contradict the idea of personal responsibility at all. Ultimately, from a spiritual perspective informed by A Course In Miracles, there is nothing that anyone must do.