I see.. to do that you will need to do something called grounding and something called practice and lots of it..

grounding is where you purposely set out to stay in the present moment, purposely checking in with your self and using things that you already know brings you comfort.. and by practice I mean you purposely do it even when you are not triggered..

when you are eating breakfast do so with the purpose of paying attention to what you are eating, how its making you feel, focus on all the details that eating breakfast entails.

when you get dressed in the morning do so with purposeful attention to what you are choosing and why, how those clothes make you feel, was there a reason why you chose that attire...

even being here on psych central do so with a purpose and attention at being here in the moment. explore the colors, smilies and variety of posts....

the more you practice being in the here and now and mindful of .....this very moment... of your day the more you will be able to remain grounded during those times when you want to be.

Grounding/mindfulness doesnt always happen the first time or even the first month. it happens for each person at what ever rate it right for them. Some people are able to learn grounding and mindfulness the first time they try it others it takes practice practice practice and more practice...

your treatment provider will be able to help you with more ideas of how to ground yourself and live a more mindful life..

there is also a grounding thread in the PTSD boards that may be able to help you.