When God closes a door he opens a window

How so you ask ,
God is  the one who hears our prayers he,
listens to our hearts cry he closes a door or,
opens a window for our  own good,
it never ceases to amaze me how he does that
what  we think is good for us God thinks  differently 
the scripture says not to rely on your own understanding 
but  on God's  wisdom .