How can I stop doubting myself?

Doubt is an issue with trust. When our foundation is not sturdy we cannot trust it. It is like a bridge that you wish to use to cross to the greener side but as you start to step on it, it gives signs to it be unstable. You would start to doubt the trust in that bridge and your approach. Now I can assume this sounds sensible but the point is that you must find something you can hope in, something you know will always prove to be true, and then you can find trust in that and let it back into your life.

Hobbies help create something try on new makeup start a blog help or volunteer at the animal shelter

I know it can be difficult but start small. Try to stick with your decisions, even if they are very small, like what to eat, or what to do for leisure. As you make the decisions, each next decision will be a little easier. Most decisions should take less than 5 minutes. If it takes more than 15 you may need to do more research or to come back to the decision at another time. Another strategy if you absolutely cannot make a decision is to carry a coin and roleplaying dice with you. Assuming all the options you would do this for look the same in pros and cons (this is for little decisions, not whether to move cities or buy a house) you can see what happens if you roll a die or flip a coin. Again, try not to go back on your decision. As you exercise these muscles you should be able to move onto bigger decisions with more confidence.

Tell yourself you are a good person everyday and you are worthy of your actions and ideas everyone is capable of achieving their goals.

From personal experience, You really need to focus on how you speak to yourself. What we often find is that we treat ourselves horribly compared to how we might treat our friends and family. Sometimes we can look at the way we treat ourselves and find that we wouldn't dream treating one of our friends that way. Pay attention to the way you talk to yourself. What kind of things do you say? Do you tell yourself that you can't do it? because if so, then that's what you start to believe. Changing the way you think about can have a bigger impact than you think. When you have negative thoughts about yourself, actually notice it and change it, encourage yourself, support yourself. After a while, it becomes a habit :)

Love your self and believe your self think of what you achieved and what you will achieve in your life ahead of you

I just trust that I have the power to change my fate. If there is something I want to change and can change. Then I know that with enough times and effort I'll change it. If there is something I want to change but can't. I just try my best to push it off my mind since thinking about something you can't have is redundant. While this answer might be too "logical" when it comes to something about the feelings. It still works if you ground yourself in reality and make sure you have a clear goal plan WITH a path to achieve such goals.

We often doubt ourselves because we are surrounded by people who make us doubt ourselves. All your life you will hear your friends, family telling you not to bother about others' opinions. One surely has the ability to ignore others , but some people have a way to get into your head, those are the toxic ones. Try your best to stay away from them. Surround yourself with positive people who uplift your mood and believe in you. If you are a person who compares her/his achievements with others' then try to acknowledge that everyone's journey is different. You work on being a version that's better than the one in the past. That's the only competition one should focus on-The present you vs the past you. There will always be people who will be better than you, keeping an open mind will make you learn about their journey and the lessons each journey teaches. It's okay if you doubt yourself once a while, happens to each one of us. The key is to not ruminate about our weaknesses rather honing our strengths and working on our weaknesses. When you accept yourself, your flaws; you will see your doubts about yourself disappearing. Being confident goes a long way.