In life, we get those circumstances that come our way that make us pucker. Not only do they make us picker but they steal our joy. No matter how strong we are lemons need a "spoonful of sugar..." to be enjoyable. What is that sugar in life?
Instead of letting it get Him down, Jesus looked to the end results of what His suffering would bring about. It was the joy at the end of it all, the love He has for us that helped Him go through it.
Did you notice what I just said? His love for us grew the joy of knowing the final outcome of all those lemons. Love is what sweetens life's lemons giving us joy.
We have two choices when life gives us lemons; become pucker sour faces or let His love sweeten the circumstance and bring joy.