You wouldn’t know it, but a year or so ago, I can remember when everything suddenly had gone chaotic to the point where I had to consult a professional I trusted for readings about potential attacks. I also hadn’t any real concrete leads to go on, but was getting desperate. Essentially, when I reached out, after a painful wait, I had learned and seen mentioned that the astrological weather, so to speak, was causing all sorts of mess for many people she had known as much as for herself. I’m not sure why you believe your old boss may be working against you, but it could easily be astrological turbulence of sorts which will and may likely already have passed on its own.
On the other hand, if not, or if it pops up again, then it really couldn’t hurt- at least in the long run- to undergo a serious uncrossing rite should you actually start to find yourself stuck in a rut.
Additionally, you could try stuff like magickally sweeping your home while praying (and having prayed beforehand), and then depositing all the collected waste in a brown paper bag with some relevant offerings and another prayer again directed to Hekate at the nearest crossroads. You could make and use a magickal good luck floor wash to fill the vacuum created by cleansing; working from the front door of the house to the back, when done with that step. Or when you’re done with using a cleansing floor wash, instead of having swept. You could pray to a familiar spirit to consecrate a spiritual bath to pour over yourself in washing away whatever negativity from your life such as one made from things like lime, parsley, florida water, and more. You can find these if you look a little and test your resourcefulness regarding vodou baths and adapting them to your non-Vodou practice as needed. Meanwhile, I think Jason Miller’s Psychic Self Defense book has some easy to reach for options to consider for baths and floor washes, for a quick start.
As a preventative measure, a daily practice of banishing would be useful to start on soon, if not yet, and an example is one such as this version of the LBRP, right here. Basic energy body cleansing would be beyond useful if performed daily along with this.