Shoe store assistant and gefen +2 [is that right?]
Obviously bitachon and histadlus have to go together.
To everyone else, i would just like to point out, that around 200 years ago a galoch called Thomas Malthuis came up with a theory that there will soon be far to may people round for the world’s resources, and since then numerous peole have taken ti seriously, and done all sorts of histadlus.
However, as they say, Hashem had the last word.