There are topics in the forums about breaking through, try
this one.
I don't recommend pushing too hard the first time. DMT is not like LSD or mushrooms. If they are your only point of reference, be ready for quite a surprise because when you do break through it's going to be the most confronting experience you've ever known.
I don't want to discourage you and I'm sure some of the more experienced forum regulars will help you along. Just chill a little

take a lower dose and build up to a breakthrough, that would make me happy. Safe travels.
"..dimethylated spirits on fire in me.."