Trusting yourself involves having the confidence and faith that the decisions YOU make on your behalf AND toward others are based on love, respect, and consideration for yourself and the other person. It is a personal choice to trust yourself, and you have to make that decision on your own, otherwise someone else will have to make it for you.
One thing you need to understand is that there will always be people who belittle your opinions. You will come across people who do not respect your values or the decisions you make. It is essential that you do not allow such persons to influence your resolve to trust in yourself. Giving room to this type of influence will impact your life negatively in the long run, thus truncating your happiness.
Trusting yourself means that you stand firm in your values and follow through with integrity on your decisions. It should be your aim to wholeheartedly pursue your goals and aspirations without letting the opinions of others distract you. It will be a very fierce fight to stay glued to your goals, especially when such goals look too ambitious in the sight of others.
You have to be strong enough to block out all the external noise and believe in yourself. Trust yourself to do and act in the way that is best for you. It’s not selfish to put yourself first. Honetly speaking, this is not going to be easy for you, but a determined and consistent resolve in yourself will give you the victory.
If you can back up your convictions with strong, decisive actions and consistent improvements based on your values and principles, you will be better for it. There should be no stopping you on this road to victory.