Can we truly be successful in life, AND have a successful relationship?

As a fashion design major, I can truly say you have to devote your whole life basically to fashion design. I missed that concept unfortuneately, but I digress. I've learned that in order to truly be successful in fashion design, I'm almost positive you cannot have ANY type of distraction. That includes partying, friends, and ofcourse my main topic ...boyfriends. I believe we as young women have all the time in the world for men, so young ladies out there don't get distracted and think you can juggle both because it absolutely cannot happen. Can it? Realistically speaking...if you want to travel the world or gain immediate success, wouldn't a partner hold you back? It really shouldn't if you have the right person in your life, but if you don't ... then I do not see how its possible to have it all...the career, success, and love. I want it all... and I'm tyring to make that all happen, but maybe we have to sometimes accept the fact that our parents are right... maybe we can't have it all... Can we? And if we can...somebody tell me how?