For a while be a encourager as a person has many critics on daily basisNormally people wont appreciate others for many reasons. May be it is because of jealousy, or not liking the person attitude or by demeaning a person they can push forward themselves. But appreciating others is the great attitude. You need not gift or send any message. Just pat him on the back even for small achievement, and that encouragement would go a long way to pep up. And by encouraging others, you are also setting a precedent not to follow the herds who are habituated to be critic for every matter. So next time try to encourage others and get satisfied too.