How to deal with imposter syndrome

Try to acknowledge your thoughts
Mindfulness involves paying attention to your thoughts as they arise and reflecting on how they affect you. Any negative thoughts that you observe or witness can be challenged and reassessed.

Positive affirmations
Affirmations are short, positive statements that you can post in plain sight to remind yourself how awesome you are on a regular basis. The more specific you are, the better. Colorful sticky notes are ideal for this activity.
Giordano suggests saying things like, "I've worked hard for what I have" or "I'm capable and deserving of my success."

Consider the evidence
Remember how hard you worked to get where you are. Check for cognitive distortions or thought filters that are telling you otherwise. Consider whether there is any evidence to suggest that you do not belong. You'll probably realize there's a lot more evidence to support why you do. Make a list of your accomplishments that have led you to where you are now (and keep it handy in case you need a reminder

Set realistic goals
Setting reasonable, manageable goals can help you set yourself up for success. While pushing yourself is important, setting unrealistic or lofty goals can lead to disappointment and failure. Of course, whenever you achieve your objectives, try to celebrate your accomplishments.