I doubt there is any meaning in life, and good things we do end up working good largely by accident.  Indeed, there is probably no meaning in the universe.  Only existence, and it is something of a trap.  I express this all as probable, not sure, since on something so significant any kind of assurance is out of reach.

In the meantime we can be compassionate, try to avoid hurting others, and help where we are sure our help will really help.