If you're climbing the ladder of life, you go rung by rung, one step at a time. Don't look too far up, set your goals high but take one step at a time. Sometimes you don't think you're progressing until you step back and see how high you've really gone.
Success, in my view, is the willingness to strive for something you really want. The person not reaching the top is no less a success than the one who achieved it, if they both sweated blood, sweat and tears and overcame obstacles and fears. The failure to be perfect does not mean you're not a success.