Work hard is not enough, The thing which is more important is work hard with smartness so that you should do more in less span of time. If you are working hard and earning money. you must manage your money in smarter way. Never spend it on useless thing and grow your money with investment planning.
Most of the time hard work does not pay but you should never disappoint and keep working on your plan. For example on Steem at starting stage you have to work hard and once you developed your audience and build solid reputation inside the community. money will automatically come so work hard with patience.