Hi Mandala,
Welcome to the AYP forum!
In regards to negative thoughts, I would say welcome to planet earth in the sense that these are the normal thoughts that arise here for all of us at some time or another. They aren't personal to you, they live here in our one collective mind. It is just a a matter of how aware of them that we are.
The moment we resist, attack, judge, avoid, worry, etc. we give the thoughts something to stick to, like a magnetic charge. If we just allow them, observe them without judgement, they come and go like strangers walking by us in the street. They don't stop and interact with us unless we engage them. Thoughts are simply objects (of potential experience) and eventually, as there is no emotional reaction in us when "negative" thoughts arise, they cease to grab our attention and we no longer notice them.
Judgements are the "ego's" habit and attempt to justify itself, reason out and make sense of the world. When the habit of reacting to a given thought is strong, it can take a long time for it to let go. There is another way to live though but it takes time to realize. As we stop judging others we stop judging ourselves and the world starts to make sense. Understanding becomes intuitive, we open and become more aware and life is able to really flow.
Judgements are a great place for inquiry. Byron Katie's book "Loving What Is" offers a great way to let go of judgement by using her effective method of inquiry.
All the best![
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