hey, I deal with this too. Exercise does help with letting off some steam. What also does wonders is to list out the things that are bothering you, and then ask yourself - "is there anything I can (and should) do about this right now?" If the answer is yes, then do it. Otherwise, let it go for the evening, and the issue(s) will still be there in the morning. Remember too - your subconscious is a valuable tool, but you need to let go so it can do its thing! You ever have those eureka moments in the shower? You can have those same kinds of revelations in the morning regarding a problem that you thought was insurmountable the night before, but you have to stop thinking about it long enough to get the right perspective on things.