Quiet as it's kept, you will never find "God will not put more on you than you can bear" in the Bible...because it's not a scripture. In fact, there are many scriptures of biblical speakers voicing that their issues seemed unbearable. (“I’m on the edge of losing it— the pain in my gut keeps burning. I’m ready to tell my story of failure, I’m no longer smug in my sin. My enemies are alive and in action, a lynch mob after my neck.” Ps. 38:17-19)
It is human nature to desire to escape all discomfort. So we assume that if we are hurting or uncomfortable, then there must be something wrong; we immediately ask God to fix it or take the pain away. God never removed Paul’s “thorn in his flesh”...instead, He graced him to function with it. This is quite similar to how I feel after having lost a chunk of my heart from losing my mom. Losing her never stops hurting, but I’m learning to live WITH the loss.
In our case, we have been granted the Burden-Bearer: Christ. It would be more befitting to say that God will never put more on us than CHRIST can bear. The Lord compels us to come to Him with our [indeed] HEAVY loads, for his yoke is easy and burden is light (Matthew 11:28-30).
So don't feel guilty for being troubled by your load, for God never promised that it wouldn't seem unbearable at times, but He DOES guarantee us His help, presence, comfort, strength, and wisdom for the journey. You’re still here, so there is still fight in you. Hardship will not consume you. Be encouraged. God gave us Jesus AND each other.
P.S. People walk away from the faith daily because they were told that salvation would rid them of all their problems. So at the first sign of adversity, they’re out.✌🏽Don’t lie to them. We are not exempt from pain or problems as believers. There is no need to fabricate the benefit of salvation, as it is already all that we need and more than we deserve.