It helps everyone if you cite the verse.
So then, brethren, stand firm and hold to the traditions which you were taught by us, either by word of mouth or by letter. (2 Thessalonians 2:15 RSV)
I do not know understand what is meant by “doctrines of the traditions.” The traditions seem to speak for themselves. Paul referenced some of these in his first letter to the Thessalonians
For this is the will of God, your sanctification: that you abstain from unchastity; that each one of you know how to take a wife for himself in holiness and honor, not in the passion of lust like heathen who do not know God; (1 Thessalonians 4:3-5)
But concerning love of the brethren you have no need to have any one write to you, for you yourselves have been taught by God to love one another; (1 Thessalonians 4:9)
Paul goes on to remind them to live quietly, mind their own affairs, work diligently with their hands, not to get drunk, to be at peace…
And we exhort you, brethren, admonish the idlers, encourage the fainthearted, help the weak, be patient with them all.
See that none of you repays evil for evil, but always seek to do good to one another and to all.
Rejoice always,
pray constantly,
give thanks in all circumstances; for this is the will of God in Christ Jesus for you.
Do not quench the Spirit,
do not despise prophesying,
but test everything; hold fast what is good,
abstain from every form of evil.
(1 Thessalonians 5:14-22)
It seems like a pretty straight forward exhortation to live moral and peaceful lives.
-Tim-