Re-encrypting my work laptop harddrive.
Veracrypt is the successor to Truecrypt and its code has been community-vetted to insure there are no ‘back doors’ in it (and its security can be independently verified).
The only downside it has is that by default, it uses a rather high header key derivation iteration value (a lot higher than truecrypt). Meaning that it can take several minutes to boot your laptop. This is a frequent complaint by new Veracrypt users.
The workaround is simple. As long as you use a password that is longer than 20 characters, you are allowed to reduce the amount of iterations substantially by using a lower multiplier value (called a PIM), that you type in at boot time after your password. The multiplayer may be as low as 1, which will more or less instantly mount your boot partition.
For the purposes of theft-risk-reduction by common criminals, this is probably more than enough protection. However, if you are seeking to thwart the NSA which may try to brute-force your password using a server farm for 5 years, it may not be 😉