Is it time?

I still have 35 text messages saved from the day McKenna was born. This means I have to individually delete text messages in my inbox frequently as my box only holds 70. For some reason I can't delete them because I feel like it's my last 'memory' from that amazing day. This is completely not true as I have hundreds of pictures and a video, as well as my beautiful daughter to look at everyday as reminders of how special that day was! So what do you think... is it time for me to delete them?