To struggle is to succeed
To me, success and struggle are inherently intertwined; in a sense, some struggles are successes; as the Scottish say, "Failing means you're playing." In other words, the fact that you're feeling the heat and sweat, whether you acheive your objective or not, means that you're in the game. The phrase itself implies that participation is its own reward; avoiding struggle by staying on the sidelines is its own loss.
One loses out on many things by trying to avoid struggle: the chance to succeed, the chance to grow and learn. So yes, struggle is a beautiful thing. Success can be beautiful too, even thrilling. Both have their merits. The key, as with anything, is to look for the balance. Life is a series of setting goals and trying to reach them. It's important to both celebrate the goals when they are reached, but also to enjoy the process; not viewing your life as endless jumping, from one milestone to the next. For one, all that jumping gets tiring (ever spend a day shooting hoops?) So if you're going to play ball, try to make the basket and try to enjoy it. The sweat is a part of the game.