Here is my take on I Thessalonians 5:18 – “give thanks in all circumstances” or “in everything give thanks.”
The word “eucharist” means thanksgiving. It is used in 1 Corinthians 11.23-24 related to the Lord’s Supper. It is as we are in union with Christ, receiving his body and blood and living out that union in thankfulness, that we become a eucharistic/thanksgiving person. It is a major element of being a Christian.
Be a Christian. Be eucharistic.