At the temple I feel Krishna conscious but outside I don't.
You dilemma is a common one. When we're in the association of devotees we feel strong and inspired and when we're away from them we feel weaker and it's more difficult to practice Krishna consciousness.
The solution is to keep good association, in many ways, as much as possible. Chant every day, preferably in the morning, to associate with Krishna and focus the mind. Try to chant in a quiet place with few distractions. Take association via internet as well via lectures. ISKCONDESIRETREE.com and Krishna.com are excellent sites for getting various types of Krishna Conscious association, movies, drama, pictures, music etc.
Go to the temple as much as possible. Develop friendships with the devotees and keep in contact with them even when you're not at the temple. Invite devotees to your home for kirtan and/or prasadam. Tell others about Krishna. That's always an excellent way to improve one's Krishna Consciousness and become/remain strong. Also regularly read Srila Prabhupada's books. Every day for one hour is good.
Keep trying to do these things and you'll find they develop your muscles in serving Krishna and help you to be strong.