Ridiculousness

I am struggling with this one and unsure of where to go from here. I am feeling that there is someone out there who is intentionally sabotaging me and I am allowing this to make me feeling hurt, angry, and disempowered....this is NOT me! I can only think that this is the intent of the individual whose actions are in question. Despite having an awareness of this situation I am unsure of how to proceed as it is a delicate matter. Do I confront this individual and if so, in what way do I go about that? I understand that I cannot ignore this situation any longer as I have been up to this point. Ignorance is not the appropriate response in that it has allowed the situation to continue and to escalate to the point that it is very convoluted now and there are several people involved.

One of my greatest struggles personally in all of this is that this type of situation is not the way that I would ever choose to operate in my life. There is no room in my life for cattiness, malicious behavior, deceitfulness, and actions that take place due to insecurity. Therefore, I find myself at a loss as to how to navigate this. I have always responded quickly to issues that I have with honesty and complete openness and compassion and I take my time to consider all sides and accept as much responsibility as I can for the situation that I am in.
In this particular situation the person and I have a history that stems back a few years and I have reason to suspect, based off of information that I have received from other people, that this person is holding a grudge and reacting today from issues that happened a few years ago. I find that ridiculous and annoying. I find that I am having difficulty moving past feeling that way and getting into a space of love and acceptance for this persons personal challenges and self-esteem issues.

ARGH!
I am just so frustrated.
I am having such a difficult time moving past this negative feeling. I don't want it!!!