Fear of getting it wrong also decides for you

Every important decision has some uncertainty: what to study, which job to say yes to, whether to take a step in a relationship. If you need to be sure you'll get it right, you'll look for guarantees that don't exist, keep putting it off or let others decide so you don't have to carry the blame. But not deciding is also deciding, and almost always for the smaller option. Prudence doesn't consist in waiting for the risk to disappear, but in finding things out, asking for advice and deciding when there is enough light. It helps a lot to remember that your worth doesn't depend on getting it right. If you make a mistake, you can correct it. That peace of mind is what lets you undertake things, learn and take reasonable risks.