Analysis of Unstable

I'm left emotionally and mentally unstable
Trying my hardest, but I'm unable,
To somehow disable,
My feelings for you; it's impossible
I wish I could disconnect my heart from my brain; cut that cable,
Easier said than done; it's not really feasible

I tried my best, brought everything to the table,
Love I once thought unbreakable,
Little did I know it's end was inevitable

Not every wound is the kind that bleeds
I should've never depended on you to satisfy my emotional needs
Doubt, uncertainty, distance; growing in our garden of love like weeds
I was hoping to enjoy the fruit of my sacrifices,
It was hard to sow those seeds
I was warned but; foolish is the one that hears, but never heeds
My heart is now shattered; nothing but countless pieces of:
Failed wishes
Broken promises
Fruitless sacrifices