Being smart is like a shortcut to achieve your goals, you can reach your goals with hard work but you may also get the same result in no time and also with less effort(in a smart way), so personally here are some tips that I think it will be really helpful.
So first of all time is money and money is time, so the first step you can do is to improve your time management skills, Split your day into multi-tasks, and make a plan. It’s like not only to imagine how things should go but also to decide about the priorities of each task.
Also working in a smart way is like using shortcuts in a keyboard, it’s how to focus on the way how to complete tasks with smart methods and this will save energy so this will increase motivation.
Be smart! rest more! make money! Some people are making money while sleeping! (like me :p)