Good evening all,
Good to have more witchy people join us 
Interested in your salt purification ritual speakout would love to hear more about it.
With regards to deflecting negative energy/others emotions. This is something I'm constantly working on too. Different things have worked for me at different times, but here's a few things I have/do use:
• Daily visualisation of cleansing and protecting my energy field. I
imagine a kind of 'cosmic hoover' (!) removing any unwanted energy, and then seal a protective barrier by imagining a golden light entering me through the top of my head, filling my body, coming out of the soles of my feet and connecting with the centre of the earth (grounding me) then coming back up through the earth and sealing a protective golden barrier which will let in positive energy and deflect negative.
• I'll bathe in Epsom salts with citrus oils (for cleansing), light a green candle and visualise negative energies being removed, 'seeing' them drain down the plug when I've finished.
• I'll sometimes take an 'oak bath' for strength and protection- with oak leaves, essential oils that feel right at the time (I like frankincense, sandalwood and ylang ylang but it's very personal)
• For protection throughout the day I like to carry a symbol of strength, e.g. An acorn, a key for security etc.
•I also like deflection symbolism. I love mirrors for this. They can be placed inside your front door facing out, on your desk at work or wherever you feel vulnerable to negative energies. I've even known to place a small, outward facing mirror inside my bra if I know I'll be spending time with someone who's energy I struggle with! The idea is to deflect the energy back to the sender rather than absorbing it.
Probably one of the most important things I've done wrt absorbing others' energy is learnt to question wether what I'm feeling is mine or someone else's. Over time this has really helped me discern and release. I'm better when I'm looking after myself, taking time for self care.
Around the home, I like to use salt for cleansing- if I want to absorb unwanted energy, I'll place salt water in the four corners of the house/room leave it to absorb, then return it to the earth with thanks.
I also use smudge sticks to clear energy and burn palo santo wood to fill the space with positivity.
I love the witchy idea of sweeping a new home with a new broom and symbols of bees for a harmonious home along with oak/acorns (midsummer baby here!) for strength and protection. I like it that I can work these into my home in a subtle way, just for me to know about 
Loving the idea of sigils, I need to do some research!