How do I decrease the size of my sql server log file?

Question

Perform a full backup of your database. Don’t skip this. Really.
Change the backup method of your database to “Simple”
Open a query window and enter “checkpoint” and execute
Perform another backup of the database
Change the backup method of your database back to “Full” (or whatever it was, if it wasn’t already Simple)
Perform a final full backup of the database.
Run below queries one by one
1. USE Database_Name
2. select name,recovery_model_desc from sys.databases
3. ALTER DATABASE Database_Name SET RECOVERY simple
4. DBCC SHRINKFILE (Database_Name_log , 1)