Being able to acknowledge and embrace differences around is a good thing to always be happy. It will make life smoother when being around others that are certainly different in many ways.
Making lies under any circumstances is not going to end well in the future. Always tell the truth regardless of everything else so that there will not be anything to fear that comes out of it later.
It is another terrible habit that prevents a person from staying happy in life. Excuses are only going to give others a bad impression of us as well. So, avoid making excuses under any circumstances.
It is very simple and somewhat cliché at first. Believe it or not, smiling will always lead to a positive vibe both inside and outside. When it becomes a habit, a happy life is there to enjoy.
There is no good end by impressing others in anything. Each person has a life that is different from others. Impressing ourselves by being better than ever is a better thing to do than impressing others.