To have a healthy relationship at your workplace and establish strong professional relationships, follow the basic rules.
Maintain body language, that is the way how to carry your body posture, eye contact and even handshakes. Our body language will often judge our confidence level. Make sure not to project it like overconfidence. The more positivity we carry, attracts positive energy and helps for a clear mindset.
Self Awareness and acceptance:
Very first, know your strengths and weaknesses and accept that. Nobody is perfect and know your unique qualities and acknowledge that. Self-awareness helps a lot and will boost your confidence.
Talking Style and Language:
Never depreciate yourself. Speak quietly without any hesitation. Words like I may be wrong, I just got lucky will lower your self-confidence.
Positive Self-Talk and Visualisation:
Always visualize your situations and imagine yourself confidently. Know how to face obstacles and challenges. Practice will make your brain calm and will make you respond positively. This will help you to be more confident.
Preparation is key:
Always prepare before you go for a meeting or presentation or for some tasks. Know about the subject. This will reduce your anxiety and boost your confidence.
Feedback is always important, whether it's positive or negative. Never take it to ego, this mindset will expose you in a negative way. Never take criticism personally, take it as an opportunity and improve your skills.