sich zutrauen

This is a reflexive verb using the dative case. You need the reflexive pronoun mir, dir, sich, etc. Usually, you add an object or an action. For example: Ich traue mir das zu (I trust myself to do that). If you are using a second verb, use zu + infinitive. It sounds complicated, but it flows naturally once you start. Just remember you are 'assigning' the ability to yourself.

Use it when someone offers you a challenge. Use it at work when a new project comes up. Use it when friends ask if you can drive in heavy snow. It is perfect for those 'moment of truth' situations. It works well for physical tasks and mental hurdles alike. It shows you are thinking realistically about your limits.

Do not use it for simple facts. You would not say you zutrauen yourself to eat an apple. That is too easy! Avoid it when talking about general trust in people. For that, use vertrauen. This phrase is strictly for 'can I do this specific task?'. Also, do not use it if you are 100% certain and it is a routine. It implies there is at least a tiny bit of doubt or effort involved.

Germans value competence and realistic self-assessment. Over-promising is seen as a negative trait. Using sich zutrauen shows you have reflected on the task. It is a very 'grounded' way to express confidence. It avoids the 'fake it till you make it' vibe. It is honest, direct, and very respected in professional circles.

If you want to ask someone else, say Traust du dir das zu?. To express doubt, use the negative: Ich traue mir das nicht zu. You might also hear jemandem etwas zutrauen. This means you think someone else is capable of something. Sometimes that is a compliment, but sometimes it is a suspicion! 'I wouldn't put it past him' is a common way that version is used.