It's no secret that our mental health benefits from nature. It's alive like us, so it makes sense. Surrounding ourselves with things that we find beautiful can improve our moods. So we should find beauty in the ordinary and pay attention to what we keep around. It is easy to collect things that we do not care about, and I will expand on this on a "minimalism blog" to come. Having that connection with our surroundings though can help us filter through the necessary and let us focus on ourselves and our happiness. Plants have done this for me.
It's easy to collect something and put it on a shelf and let it sit there for years. Collecting dust and not really adding any value to your space. I still love my random knick knacks and I try to move them around to keep things fresh, but my go to lately has been plants. I can't put a plant on a shelf and forget about it. I am emotionally attached to them (and I like it).
If one of my plants aren't doing well then I try to figure out what's wrong. I move it around, repot it, or change my watering habits. It makes me think and problem solve. So good for the brain. And if one of my plants is thriving then I am thrilled! I feel like I helped it do that (I don't take too much credit though).
Plants also have the ability to help you accumulate less stuff. If your space is feeling bare then it's easy to convince yourself that you neeeeeed that thing you saw at HomeSense (and sometimes you really do need it). You might get it and then not like it in a few months. That's because you bought it to fill a space instead of loving it on it's own. A little green friend can fill that space for you until you find exactly what you're looking for! Having said that though, don't abuse plants. Move them around, but make sure they are safe places for them.
Take a minute to learn something new and find a plant that you like. Research how to take care of it and let it help your space.