What you need to when you have worked hard for something, is to reward yourself, treat yourself, and make yourself feel happy with what you have accomplished, because you have succeeded in doing it.
I do believe that we need an inspiration, we need a motivation that will drive us towards our goals, and the thing that will push us forward is the rewards that we need to give to ourselves, because we move through a process in our lives, and it is through this moving process that we need the fuel that would propel us forward.
Of course, when we do something, we have breaks, we have stops, and when we have these stops, we might see that we have certainly and surely have come a long way, and because of this, we see the pride in ourselves and we become happy and satisfied. We become like this because we are proud of ourselves.
Treat yourself, give yourself a break, a relaxing moment, a leisure time, so that you will be fueled more to pursue it, because there is never an end to something. There are times that it seems that you have already mastered something, there are times that seems that you have already given it your best shot, and that you may think that you have mastered that specific something, but in reality you still have not. Perhaps you have, but you need to not stop, you need to find other ways that you can use for your potential.
Reward yourself, be happy, remove the pressures in life, be satisfied with your achievement with your projects, and foresee a bright future unfold right through you, because the future gives you an insight into what will happen to you once you have finished it. The future is what will give you the power to move forward and push yourself more, which is why you need to have a break, a rest, a stop, every now and then so that you will not be exhausted and thoroughly tired from your hard work.
It is what inspires you and motivates you to push yourself to the limit, until the time comes when you can reach the state of perfection in your life. You are the one who makes your own destiny, your own life, which is why learn to be happy and worry free sometimes, be comfortable, rest for a while, make yourself happy with other things, then pursue your goals again.
That is life.