Thoughts are so often with us but, like a letter in the mail, we do not have to receive them: they do not belong to us.
It can be hard to detach ourselves from these results of the mental process, particularly those which create a negative emotional reaction as so many thoughts do. It feels so personal as the what-ifs and perhapses run through the mind like an out-of-control child, absorbing the attention and triggering feelings of fear, stress and anxiety.
It is interesting that thoughts that are from the Higher Mind are quite different - not random or chaotic but reasoned, clear and helpful, and often decisive. They are an inner knowing, the certainty we have occasionally when we wake up about what to do or where to go. We could call them messages from Spirit.
Higher Mind thoughts are letters we are pleased to receive. Lower Mind thoughts are junk mail, communication you have not asked for and do not want: if you can’t stop it coming through your mental door, then when it arrives you observe it for what it is and dispose of it calmly without getting attached to it.
I find it helps, if I get caught up in some mental spam, to take a few deep breaths when I am able to see what is occurring, to break the thought pattern and bring myself back to the present and myself, in the knowledge that the thought is not who I am. It is one of the hardest parts of being human to do this and after years of trying I do not always succeed. I will persevere, however, for I know it is worth it.