I like to go for at least a short walk every day. I do find this a time to speak to God and even more so to allow God to speak to me. So consider going on a 30 minute walk as a Lenten activity. Turn off the music and walk in silence. This is an especially powerful experience for teenagers, who have a lot of noise and distraction in their lives.
I like to walk in a local park instead of on the sidewalk along the street. That way I am even more aware of the silence and not distracted by the sound of cars. I just let whatever is on my mind bubble up to the top. After about 5 minutes, I can usually tell what is on my mind. And then I can talk to God about it. And then, if I can clear my head, I can do some discernment.
I am a person who likes to move. So this active sort of prayer works well for me. And some days there is no big problem on my mind. On those days I usually become aware of the birds singing, or the breeze on my skin, or the beauty of a falling leaf. Then I can just give thanks to God for the wonder of that moment.