Lama Ole’s answer:
My advice is to use common sense. Step by step one can go further and at the same time do more for others. Occasionally, we should go beyond our limits, because this creates more space in our mind and is very joyful. But one should still be cautious when doing so.
Once your motivation is pure—meaning, as soon as you work solely for others—then the buddhas think of you and you are protected. You do everything for others and the others do everything for you. I don’t even think about whether something is dangerous anymore. If one just works in open space and does what the moment requires, then everything glistens, everything is full of joy and happens here and now.