Love tea? You're in luck. There is a neat little flavonoid present in tea leaves called epigallocatechin gallate that can actually work to inhibit allergic reactions. It's present in black and white teas, but you'll find the best source of it in green tea.
Yeah, yeah, yeah, everyone could use this, but reducing the stress in your life can have a positive impact on your body's reaction to allergens, including seasonal ones. Getting more exercise, meditating, and even doing something as simple as practicing deep breathing when you feel frazzled can greatly impact your stress levels, which, in turn, can help keep your allergies at bay (or at least keep them from taking over your whole life).
Get better air filters
Swapping out conventional air filters in your home for HEPA filters can significantly reduce the number of allergens floating around in your air trying to ruin your quality of life. Studies show that adding HEPA filters to work on your whole house are more effective than ones that only work in one zone of your home, and it's a pretty quick, simple fix (though you'll have to bust open your wallet to do it).