You were created for love, but may have learned to fear! The neurological love pathway in your brain consciously evaluates toxic thoughts, and as you choose to hand the situation over to God, you do not submit to fear. And love is the stronger of the two pathways! 'Where God's love is, there is no fear, because God's perfect love drives out fear. It is punishment that makes a person fear, so love is not made perfect in the person who fears' (1 John 4:18 NCV).
As a redeemed child of God, love is your normal default mode. You're designed for love to dominate. Regardless of the way you have chosen to react in the past, painful, toxic thoughts can be reconstructed, even toxic feelings you've been nursing for so long and are so familiar with that you think they are normal. You can analyse them and rewire them because of your brain's neuroplasticity.
The apostle Paul said: 'Do not be conformed to this world [its values and thought patterns], but be transformed by the renewing of your mind.' Will this 'renewing' happen overnight? No. Science shows that you need to practise using something at least seven times before it becomes part of you. As you keep doing this, God's Spirit will work with you, and eventually you'll be able to use this amazing love circuit of the brain to balance your reason and emotions. When you do that, you'll take a giant leap in the direction of bringing all your thoughts, which produce your emotions, under control (see 2 Corinthians 10:5).