Everything is worth it. The hard work, the times when you're tired, the times where you're a bit sad... In the end, it's all worth it because it really makes me happy. There's nothing better than loving what you do.
The law of work does seem utterly unfair-but there it is, and nothing can change it: the higher the pay in enjoyment the worker gets out of it, the higher shall be his pay in cash, too.
Let not him who is houseless pull down the house of another, but let him work diligently and build one for himself, thus by example assuring that his own shall be safe from violence when built.
Upon this subject, the habits of our whole species fall into three great classes--useful labour, useless labour and idleness. Of these the first only is meritorious; and to it all the products of labour rightfully belong; but the two latter, while they exist, are heavy pensioners upon the first, robbing it of a large portion of it's just rights. The only remedy for this is to, as far as possible, drive useless labour and idleness out of existence.
Oh, Adam was a gardener, and God who made him sees That half a proper gardener's work is done upon his knees, So when your work is finished, you can wash your hands and pray For the Glory of the Garden, that it may not pass away!