1. Practice Gratitude: Take a minute to jot down or mentally acknowledge three things you're grateful for about yourself. They can be small or significant; gratitude shifts your focus to the positive, enhancing your self-esteem.

2. Power Pose: Stand in a posture of confidence, such as with your hands on your hips and your chin tilted upward, for two minutes. This can actually increase your levels of testosterone (associated with confidence) and decrease cortisol levels (associated with stress), making you feel more confident.

3. Positive Affirmations: Repeat positive affirmations that resonate with you. Choose statements that counteract specific negative thoughts you have about yourself. For example, if you often feel not smart enough, repeat, "I am intelligent and capable of learning anything I put my mind to."

4. Dress Nicely: What you wear affects how you feel about yourself. Put on an outfit that makes you feel good, even if you're not going anywhere special. It's not about dressing for others, but for the feeling of confidence it brings you.

5. Quick Wins: Complete a small task you've been putting off, like tidying up your workspace or making your bed. Accomplishing tasks, no matter how small, can give you a sense of achievement and boost your self-esteem.

6. Mindful Breathing: Spend a minute or two focusing solely on your breath. Breathe in deeply through your nose, hold for a few seconds, and exhale slowly through your mouth. Mindfulness reduces stress and increases your presence and self-awareness, grounding you in the moment.

7. Smile: Smiling, even if it's forced, can trigger a cascade of positive physiological changes in your body that reduce stress and make you feel happier and more confident.

8. Compliment Someone Else: Giving a genuine compliment makes you feel good and increases your sense of social connection. When we lift others, we lift ourselves.

9. Visualize Success: Spend a few minutes visualizing a successful outcome for your day or an upcoming event. Visualizing success can boost your confidence and increase the likelihood of achieving your goals.

10. Limit Social Media: Take a 10 minute break from social media. Comparing ourselves to others can be a major thief of joy and self-esteem. Disconnecting, even briefly, can help you regain perspective on what truly matters.