Replace the word 'profit' with the word 'value' and they are both correct. Also in your question you should use 'these' in place of 'this'

I profit my time We profit our conversations You can say: 'I value my time.' and 'We value our conversations.' Or you can say "I profit from my time.' and 'We profit from our conversations.' It really depends on what you are meaning and the intent of your statements. Profit means to gain an advantage or benefit. However, to 'value' something means to give something worth. So again, it would depend on your intention with these sentences and what you mean to convey. I hope this answers your question. ~Samantha :)