Typically the saying “right plant right place” refers to the needs of the plant. Put the plant where its needs (water, light, type of soil, temperature, etc…) are met and it will thrive.
For me the saying also fits for those times when you buy a plant you love, plant it where you think it will do, and look, its best. It thrives, but you find yourself liking it less and less. Then you see that same plant in a friend’s garden, or at the nursery, and you fall in love with it all over again.
That’s how I was feeling about my Euphorbia ‘Tasmanian Tiger’, I loved them when I saw them elsewhere, but mine, not so much. Last spring I finally tore mine out, gave a couple away, and replanted one in a different spot. Now, I love it! The white striped leaves brighten a very dark corner, that gets great morning light, but don’t hog the spotlight like they did when they were in a more exposed area. Have you found that moving an out-of-favor plant to another location in your garden changes the way you feel about it? Or once you decide you don’t like it, then its outta there with out a second thought?