Honey is very nice. But when you eat too much, it can make you vomit.
So in spiritual matters, you should not indiscriminately go beyond your limits. Do only what you can do.
That’s what God wants. The rest He Himself will make up for in His grace.
For there is also the fear of despair when reading about the high states reached by the saints. Go forward in the spiritual life with a humble attitude and God will not abandon you.
Do not try to reach spiritual states that are beyond your strength, otherwise you will definitely fall and the devil will take advantage of this fall.
St. Isaac the Syrian