The speaker in ""The Rainy Day"" finds hope by

Noticing the new green grass sprouting.

Making a new friend.

Talking to someone about his problems.

Remembering the sun behind the clouds.

The speaker in "The Rainy Day" finds hope by remembering the sun behind the clouds. He says that every person has to have a dark and dreary day sometime in their life, but to remember that there is light at the end of the tunnel.