i just don't know...

sometimes, there is a time when i feel so exhausted
there is a time when i feel so lonely
there is a time when i don't know how to talk
there is a time when i don't know what to do

i frequently ask when is the right time
to start...
or to stop...
sometimes i know how to start
but mostly i don't know how to stop....
yeah..i just don't know...
maybe somebody could tell me...
how to stop...