Quote from NoDoji:
Based on my personal experience, self-sabotage and procrastination are not symptoms of "fear of success", they're symptoms of fear of failure. Procrastination allows a person to remain in a state of hope ("I can accomplish X whenever I make the decision to; I just haven't decided to yet.") and self-sabotage allows a person to blame external factors for failure to get started or to succeed.
With regard to day trading, for example, you may believe you have an edge, yet have a problem putting on trades based on your observations. You hesitate because you first want to see some confirmation that you're right, and you miss the move or get in late (which dilutes or even ruins your edge). Or you check email, surf the net, go get a snack or cup of coffee, pet the dog, when you're supposed to be watching for setups to unfold. This gives you an "out" for missing a great setup. If this happens occasionally, it's not a problem, but if it happens regularly, it's self-sabotage.
Both of these examples illustrate fear of failure. If you hesitate, you're either afraid of losing trades or you're afraid of uncertainty in general (meaning you either don't have a statistically valid plan or you doubt your ability to remain steadfast in an environment of constant uncertainty). If you become easily distracted and miss opportunities, you're afraid of finding out you don't have what it takes to produce consistent profitability as a trader.