We so often feel like change and growth should be easy and come with some sort of magic wand. It doesn't.
Personal evolution comes like a well tended garden. Plan it (decide). Design it (set goals). See it with all its colour (visualize what you'll look like when you're being your best self).
And then: Do. The. Work.
Your muscles (brain, heart, soul) will be sore and stiff with the thing. Keep going. You'll become better, fitter, stronger as you go.
Plus you see the garden grow. Mary was onto it. Mary knew something.
Nurture it. Water that garden. For god's sake, get rid of the weeds. Negative thoughts, spinning like a turntable of noise, never stop until you get them out of the garden of your self.
Tend to the garden of you. Yes there will be death (loss, pain). Turn the soil of your life afterward. Fertilize it with new stuff, good stuff. Grow the next garden.
This verse came to me in childhood and resonates with a deeper meaning now:
Mary, Mary, quite contrary,
How does your garden grow?
With silver bells, and cockle shells,
And pretty maids all in a row.
Do the work on your garden. Grow it, love it. The world needs silver belled, cockle-shelled gardens, in all ways.