It means that if you lose something it will come back to you but if you throw something away because you are ‘destroying and hurting’ it, it won’t come back to you and when you throw something away it’s gone forever in the rubbish. Alternatively imagine it’s a kid if you lose it will try and find you if you treat it badly and throw it away it will leave. I agree with what this quote is saying and if I could change it I would say treat everything will respect because you’ll never know when you need it.
Hope that helped and it wasn’t too confusing