Is there a theme in your struggles? For example, are multiple areas of your life requiring your patience to grow? Or are there several tasks you've undertaken recently that require persistence? They are PREPARATION.
That's the thing with growing fruit. Because we are gaining more than what we have, it's an uncomfortable stretch. I encourage you to view your struggles today through the lens of hope, asking God what He is growing in you. Instead of looking at them as struggles, look at them as promises of bigger things to come, preparing you to receive more than you previously could.
"And I am certain that God, who began the good work within you, will continue his work until it is finally finished on the day when Christ Jesus returns." Phil. 1:6