Please remember that God does not send burdens. Humans make their own burdens.
Proverbs 3 (KJV) gives us instructions on how to manage ourselves with God's help. We can look especially at
Proverbs 3:11-12 (KJV) for how God disciplines us when we, ourselves, create problems in our own lives, but saying that God casts burdens on us is a very dangerous thought process.
When we, ourselves, have any doubts about our Christian walk, we ourselves become a target for Satan's agenda. We, as Christians, have the power of Jesus Christ on our side in having the ability to order evil out of ourselves in His name. However, it is best not to open the door to Satan's spirit in the first place.
Worries, stresses, irritability and strife are all human frailties. However, if we pray for God's help in dealing with these things, He will hear our prayers. Also, please remember what is stated in
1 Corinthians 10:13 (KJV),
"13 There hath no temptation taken you but such as is common to man: but God is faithful, who will not suffer you to be tempted above that ye are able; but will with the temptation also make a way to escape, that ye may be able to bear it."
There is an excellent analysis and study on this subject located here:
Bible.com analysis.