Life is easy and hard at the same time

life's journey is winding turns.
sick to know that we can be happy some moment and next moment we can grieve.
can feel sore exalted and humbled in a minute.
sometimes there are times when my mind flashed on this process.
yep, I also realized that this way must have a purpose.
but sometimes I feel tired to figure out what does it all means.
Can I have a thought like this?