Rare form of wie man sich bettet, so liegt man.

as you make your bed, so you must lie in it

to speak about something of which one has no personal experience, thus in a theoretical, impractical, unrealistic way / to speak without knowledge, to drivel

(idiomatic) to fall into one's lap

absolutely certain; undoubtable

Things never turn out quite as bad as they seem at first (or as pessimists/alarmists make them seem).

a chain is only as strong as its weakest link

one is treated the same way as one treats other people; your own treatment of people will fall back on you; what goes around comes around

(idiomatic) One must experience something to understand it properly. (But sometimes used without context merely for comedic effect.)

goodbye