Stay within your limits
also includes
stay within the limits of your expertise and skills

If expertise (absolute knowledge about a subject) too small,
then
first learn and expand your knowledge and skills before you do

Because
know what you do before you do
learn until you know before you do

Making mistakes by doing without knowing,
by doing before learning until knowing,
may be common practice among mankind on earth,
however such malpractice also is cause of many thousands of people being killed
in industries, recreation and at home

Do only whatever you can do 100,00% safe
for ALL involved - humans and all nature

Be safe for yourself and for all creation
stay within your limits
or safely expand your limits

Mistakes always are expensive
and may cause karma and thus future incarnations to correct damage and mistakes

Learn about God and Love from the Cyberspace Ashram for Kriya Yoga, God and Love. Jesus teachings on love including the sacred teachings to learn kriya yoga are available for instant free download in the Spiritual Treasures.

Learning by trial and error is done by babies in a sandbox or with worthless lego/duplo toys or by playing with bits and bytes for computer games,
but NEVER in real life or for real life applications!