In reflection of my most difficult day, this portion of Psalm 136 screams Truth to me. On my darkest day I cried out to Him and He answered me. He remembered me.
Our uncertainty about tomorrow may be there but we can take comfort that He already knows what the outcome is for everyone one of our situations. There is nothing that takes Him by surprise.
And you see, this is where the problem with the Wealth and Prosperity 'gospel'. It makes it seem as if, more often that not, our lives should being going really well.