Success isn't a destination. It's a journey—and it's one that you're going to have to keep taking over and over again.
It's not about getting there; it's about the process of getting there. Don't focus on being finished with something. Focus on being committed to it.
What makes you successful? Your ability to keep moving forward, even when things get hard? Your perseverance? Your commitment to learning and growing even when things seem like they're going nowhere? It's all of those things.
The key is not stopping. Success is a series of small steps (and sometimes big ones!) that build up over time into something great. Stop looking at yourself as "not successful" because you haven't reached your goal yet—start looking at yourself as someone who has been successful every step of the way because they kept going when things got tough!